121223111331112 has 16 divisors (see below), whose sum is σ = 259763809995360. Its totient is φ = 51952761999024.

The previous prime is 121223111331083. The next prime is 121223111331131. The reversal of 121223111331112 is 211133111322121.

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, 1082349208258 + ... + 1082349208369.

It is an arithmetic number, because the mean of its divisors is an integer number (16235238124710).

Almost surely, 2^{121223111331112} is an apocalyptic number.

It is an amenable number.

121223111331112 is an abundant number, since it is smaller than the sum of its proper divisors (138540698664248).

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

121223111331112 is a wasteful number, since it uses less digits than its factorization.

121223111331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164698416640 (or 2164698416636 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

Adding to 121223111331112 its reverse (211133111322121), we get a palindrome (332356222653233).

The spelling of 121223111331112 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, one hundred eleven million, three hundred thirty-one thousand, one hundred twelve".