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11211220102020 = 22351064331755599
BaseRepresentation
bin1010001100100101000011…
…0010101010101110000100
31110200210010012112121020220
42203021100302222232010
52432141034321231040
635502210255224340
72234661325343121
oct243112062525604
943623105477226
1011211220102020
1136327195208a4
121310986b180b0
136342a1142843
142aa8a985d748
15146969b982d0
hexa3250caab84

11211220102020 has 48 divisors (see below), whose sum is σ = 31391729107200. Its totient is φ = 2989628901376.

The previous prime is 11211220102013. The next prime is 11211220102039. The reversal of 11211220102020 is 2020102211211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5508181 + ... + 7263779.

It is an arithmetic number, because the mean of its divisors is an integer number (653994356400).

Almost surely, 211211220102020 is an apocalyptic number.

11211220102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211220102020 is an abundant number, since it is smaller than the sum of its proper divisors (20180509005180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211220102020 is a wasteful number, since it uses less digits than its factorization.

11211220102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862044 (or 1862042 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11211220102020 its reverse (2020102211211), we get a palindrome (13231322313231).

The spelling of 11211220102020 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 106433 212866 319299 425732 532165 638598 1064330 1277196 1596495 1755599 2128660 3192990 3511198 5266797 6385980 7022396 8777995 10533594 17555990 21067188 26333985 35111980 52667970 105335940 186853668367 373707336734 560561005101 747414673468 934268341835 1121122010202 1868536683670 2242244020404 2802805025505 3737073367340 5605610051010 11211220102020