121203231112 has 16 divisors (see below), whose sum is σ = 227262285900. Its totient is φ = 60599954880.

The previous prime is 121203231103. The next prime is 121203231133. The reversal of 121203231112 is 211132302121.

It can be written as a sum of positive squares in 2 ways, for example, as 121191711876 + 11519236 = 348126^2 + 3394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121203231112.

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, 136062 + ... + 510802.

Almost surely, 2^121203231112 is an apocalyptic number.

It is an amenable number.

121203231112 is a deficient number, since it is larger than the sum of its proper divisors (106059054788).

121203231112 is a wasteful number, since it uses less digits than its factorization.

121203231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415176 (or 415172 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121203231112 its reverse (211132302121), we get a palindrome (332335533233).

The spelling of 121203231112 in words is "one hundred twenty-one billion, two hundred three million, two hundred thirty-one thousand, one hundred twelve".