13121031112 has 32 divisors (see below), whose sum is σ = 28121932800. Its totient is φ = 5622211584.

The previous prime is 13121031107. The next prime is 13121031167. The reversal of 13121031112 is 21113012131.

It is a happy number.

It is a super-2 number, since 2×13121031112² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313689 + ... + 353047.

It is an arithmetic number, because the mean of its divisors is an integer number (878810400).

Almost surely, 2^13121031112 is an apocalyptic number.

It is an amenable number.

13121031112 is an abundant number, since it is smaller than the sum of its proper divisors (15000901688).

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

13121031112 is a wasteful number, since it uses less digits than its factorization.

13121031112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45325 (or 45321 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13121031112 its reverse (21113012131), we get a palindrome (34234043243).

The spelling of 13121031112 in words is "thirteen billion, one hundred twenty-one million, thirty-one thousand, one hundred twelve".