251020121432452 has 12 divisors (see below), whose sum is σ = 439285939343440. Its totient is φ = 125509853048616.

The previous prime is 251020121432321. The next prime is 251020121432537. The reversal of 251020121432452 is 254234121020152.

It is a super-2 number, since 2×251020121432452² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49181178 + ... + 54044689.

Almost surely, 2^{251020121432452} is an apocalyptic number.

It is an amenable number.

251020121432452 is a deficient number, since it is larger than the sum of its proper divisors (188265817910988).

251020121432452 is a wasteful number, since it uses less digits than its factorization.

251020121432452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103833810 (or 103833808 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 251020121432452 in words is "two hundred fifty-one trillion, twenty billion, one hundred twenty-one million, four hundred thirty-two thousand, four hundred fifty-two".