11102131012 has 12 divisors (see below), whose sum is σ = 22204262080. Its totient is φ = 4758056136.

The previous prime is 11102130973. The next prime is 11102131037. The reversal of 11102131012 is 21013120111.

It is a happy number.

11102131012 is an admirable number.

It is a super-2 number, since 2×11102131012² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11102130983 and 11102131001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198252312 + ... + 198252367.

Almost surely, 2^11102131012 is an apocalyptic number.

It is an amenable number.

11102131012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11102131012 is a wasteful number, since it uses less digits than its factorization.

11102131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396504690 (or 396504688 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11102131012 its reverse (21013120111), we get a palindrome (32115251123).

The spelling of 11102131012 in words is "eleven billion, one hundred two million, one hundred thirty-one thousand, twelve".