13121322011112 has 32 divisors (see below), whose sum is σ = 37489491460800. Its totient is φ = 3748949145984.

The previous prime is 13121322011107. The next prime is 13121322011123. The reversal of 13121322011112 is 21111022312131.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 39051553437 + ... + 39051553772.

It is an arithmetic number, because the mean of its divisors is an integer number (1171546608150).

Almost surely, 2^{13121322011112} is an apocalyptic number.

13121322011112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13121322011112 is an abundant number, since it is smaller than the sum of its proper divisors (24368169449688).

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

13121322011112 is a wasteful number, since it uses less digits than its factorization.

13121322011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78103107225 (or 78103107221 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 13121322011112 its reverse (21111022312131), we get a palindrome (34232344323243).

The spelling of 13121322011112 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty-two million, eleven thousand, one hundred twelve".