121231112 has 8 divisors (see below), whose sum is σ = 227308350. Its totient is φ = 60615552.

The previous prime is 121231093. The next prime is 121231133. The reversal of 121231112 is 211132121.

It can be written as a sum of positive squares in only one way, i.e., 119990116 + 1240996 = 10954^2 + 1114^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7576937 + ... + 7576952.

Almost surely, 2^121231112 is an apocalyptic number.

It is an amenable number.

121231112 is a deficient number, since it is larger than the sum of its proper divisors (106077238).

121231112 is a wasteful number, since it uses less digits than its factorization.

121231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15153895 (or 15153891 counting only the distinct ones).

The product of its digits is 24, while the sum is 14.

The square root of 121231112 is about 11010.5000794696. The cubic root of 121231112 is about 494.9234476726.

Adding to 121231112 its reverse (211132121), we get a palindrome (332363233).

The spelling of 121231112 in words is "one hundred twenty-one million, two hundred thirty-one thousand, one hundred twelve".