120172330971 has 128 divisors (see below), whose sum is σ = 226437120000. Its totient is φ = 61175727360.

The previous prime is 120172330951. The next prime is 120172330991. The reversal of 120172330971 is 179033271021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120172330951) and next prime (120172330991).

It is not a de Polignac number, because 120172330971 - 2¹⁵ = 120172298203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120172330951) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 44033935 + ... + 44036663.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040000).

Almost surely, 2^120172330971 is an apocalyptic number.

120172330971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120172330971 is a deficient number, since it is larger than the sum of its proper divisors (106264789029).

120172330971 is a wasteful number, since it uses less digits than its factorization.

120172330971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174 (or 3168 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The spelling of 120172330971 in words is "one hundred twenty billion, one hundred seventy-two million, three hundred thirty thousand, nine hundred seventy-one".