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103012020220 = 2255150601011
BaseRepresentation
bin101111111101111111…
…1101010111111111100
3100211220002021211020011
41133323333222333330
53141432034121340
6115153441033004
710304506503364
oct1377377527774
9324802254204
10103012020220
113a76166650a
1217b6a625764
139938842225
144db30b59a4
152a2d8a50ea
hex17fbfeaffc

103012020220 has 12 divisors (see below), whose sum is σ = 216325242504. Its totient is φ = 41204808080.

The previous prime is 103012020173. The next prime is 103012020229. The reversal of 103012020220 is 22020210301.

It is a super-2 number, since 2×1030120202202 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103012020220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103012020229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575300486 + ... + 2575300525.

It is an arithmetic number, because the mean of its divisors is an integer number (18027103542).

Almost surely, 2103012020220 is an apocalyptic number.

103012020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103012020220 is an abundant number, since it is smaller than the sum of its proper divisors (113313222284).

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

103012020220 is a wasteful number, since it uses less digits than its factorization.

103012020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150601020 (or 5150601018 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 103012020220 its reverse (22020210301), we get a palindrome (125032230521).

The spelling of 103012020220 in words is "one hundred three billion, twelve million, twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 5150601011 10301202022 20602404044 25753005055 51506010110 103012020220