121213323112 has 48 divisors (see below), whose sum is σ = 266998822020. Its totient is φ = 51434208000.

The previous prime is 121213323067. The next prime is 121213323151. The reversal of 121213323112 is 211323312121.

It can be written as a sum of positive squares in 2 ways, for example, as 106415573796 + 14797749316 = 326214^2 + 121646^2 .

It is a super-2 number, since 2×121213323112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1491189 + ... + 1570372.

Almost surely, 2^121213323112 is an apocalyptic number.

It is an amenable number.

121213323112 is an abundant number, since it is smaller than the sum of its proper divisors (145785498908).

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

121213323112 is a wasteful number, since it uses less digits than its factorization.

121213323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061682 (or 3061671 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 121213323112 its reverse (211323312121), we get a palindrome (332536635233).

The spelling of 121213323112 in words is "one hundred twenty-one billion, two hundred thirteen million, three hundred twenty-three thousand, one hundred twelve".