121310612 has 6 divisors (see below), whose sum is σ = 212293578. Its totient is φ = 60655304.

The previous prime is 121310561. The next prime is 121310633. The reversal of 121310612 is 216013121.

It can be written as a sum of positive squares in only one way, i.e., 119333776 + 1976836 = 10924^2 + 1406^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15163823 + ... + 15163830.

It is an arithmetic number, because the mean of its divisors is an integer number (35382263).

Almost surely, 2^121310612 is an apocalyptic number.

It is an amenable number.

121310612 is a deficient number, since it is larger than the sum of its proper divisors (90982966).

121310612 is a wasteful number, since it uses less digits than its factorization.

121310612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30327657 (or 30327655 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 121310612 is about 11014.1096780448. The cubic root of 121310612 is about 495.0316097217.

Adding to 121310612 its reverse (216013121), we get a palindrome (337323733).

The spelling of 121310612 in words is "one hundred twenty-one million, three hundred ten thousand, six hundred twelve".