121356025663402 has 24 divisors (see below), whose sum is σ = 193389815069280. Its totient is φ = 57103397158080.

The previous prime is 121356025663399. The next prime is 121356025663403. The reversal of 121356025663402 is 204366520653121.

It is not an unprimeable number, because it can be changed into a prime (121356025663403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3568374 + ... + 15982657.

It is an arithmetic number, because the mean of its divisors is an integer number (8057908961220).

Almost surely, 2^{121356025663402} is an apocalyptic number.

121356025663402 is a deficient number, since it is larger than the sum of its proper divisors (72033789405878).

121356025663402 is a wasteful number, since it uses less digits than its factorization.

121356025663402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561806 (or 19561789 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 121356025663402 in words is "one hundred twenty-one trillion, three hundred fifty-six billion, twenty-five million, six hundred sixty-three thousand, four hundred two".