121356712 has 16 divisors (see below), whose sum is σ = 227776500. Its totient is φ = 60616320.

The previous prime is 121356691. The next prime is 121356713. The reversal of 121356712 is 217653121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 121132036 + 224676 = 11006^2 + 474^2 .

It is not an unprimeable number, because it can be changed into a prime (121356713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162 + ... + 15622.

Almost surely, 2^121356712 is an apocalyptic number.

It is an amenable number.

121356712 is a deficient number, since it is larger than the sum of its proper divisors (106419788).

121356712 is a wasteful number, since it uses less digits than its factorization.

121356712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15516 (or 15512 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 121356712 is about 11016.2022494143. The cubic root of 121356712 is about 495.0943084603.

The spelling of 121356712 in words is "one hundred twenty-one million, three hundred fifty-six thousand, seven hundred twelve".