97116021 has 12 divisors (see below), whose sum is σ = 140542272. Its totient is φ = 64622376.

The previous prime is 97115989. The next prime is 97116023. The reversal of 97116021 is 12061179.

It is not a de Polignac number, because 97116021 - 2⁵ = 97115989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97116023) 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, 4941 + ... + 14786.

It is an arithmetic number, because the mean of its divisors is an integer number (11711856).

Almost surely, 2^97116021 is an apocalyptic number.

It is an amenable number.

97116021 is a deficient number, since it is larger than the sum of its proper divisors (43426251).

97116021 is a wasteful number, since it uses less digits than its factorization.

97116021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20280 (or 20277 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 97116021 is about 9854.7461154512. The cubic root of 97116021 is about 459.6532058513.

The spelling of 97116021 in words is "ninety-seven million, one hundred sixteen thousand, twenty-one".