121257412 has 6 divisors (see below), whose sum is σ = 212200478. Its totient is φ = 60628704.

The previous prime is 121257407. The next prime is 121257431. The reversal of 121257412 is 214752121.

It can be written as a sum of positive squares in only one way, i.e., 120868036 + 389376 = 10994^2 + 624^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15157173 + ... + 15157180.

Almost surely, 2^121257412 is an apocalyptic number.

It is an amenable number.

121257412 is a deficient number, since it is larger than the sum of its proper divisors (90943066).

121257412 is a wasteful number, since it uses less digits than its factorization.

121257412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30314357 (or 30314355 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 121257412 is about 11011.6943292120. The cubic root of 121257412 is about 494.9592348159.

The spelling of 121257412 in words is "one hundred twenty-one million, two hundred fifty-seven thousand, four hundred twelve".