120531515251021 has 8 divisors (see below), whose sum is σ = 145853262152640. Its totient is φ = 97235508101568.

The previous prime is 120531515251013. The next prime is 120531515251051. The reversal of 120531515251021 is 120152515135021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120531515251021 - 2³ = 120531515251013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120531515251051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506434937911 + ... + 506434938148.

It is an arithmetic number, because the mean of its divisors is an integer number (18231657769080).

Almost surely, 2^{120531515251021} is an apocalyptic number.

It is an amenable number.

120531515251021 is a deficient number, since it is larger than the sum of its proper divisors (25321746901619).

120531515251021 is a wasteful number, since it uses less digits than its factorization.

120531515251021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012869876083.

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 120531515251021 in words is "one hundred twenty trillion, five hundred thirty-one billion, five hundred fifteen million, two hundred fifty-one thousand, twenty-one".