Search a number
-
+
11210212020 = 2235726690981
BaseRepresentation
bin10100111000010111…
…00100001010110100
31001221020222202220210
422130023210022310
5140424303241040
65052213425420
7544541141610
oct123413441264
931836882823
1011210212020
114832966237
12220a33b270
131098648b67
14784b90340
15459264480
hex29c2e42b4

11210212020 has 48 divisors (see below), whose sum is σ = 35872679808. Its totient is φ = 2562334080.

The previous prime is 11210212019. The next prime is 11210212043. The reversal of 11210212020 is 2021201211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11210211987 and 11210212005.

It is a congruent number.

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, 13345071 + ... + 13345910.

It is an arithmetic number, because the mean of its divisors is an integer number (747347496).

Almost surely, 211210212020 is an apocalyptic number.

11210212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11210212020 is an abundant number, since it is smaller than the sum of its proper divisors (24662467788).

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

11210212020 is a wasteful number, since it uses less digits than its factorization.

11210212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26691000 (or 26690998 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11210212020 its reverse (2021201211), we get a palindrome (13231413231).

The spelling of 11210212020 in words is "eleven billion, two hundred ten million, two hundred twelve thousand, twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 26690981 53381962 80072943 106763924 133454905 160145886 186836867 266909810 320291772 373673734 400364715 533819620 560510601 747347468 800729430 934184335 1121021202 1601458860 1868368670 2242042404 2802553005 3736737340 5605106010 11210212020