97210121 has 4 divisors (see below), whose sum is σ = 101436672. Its totient is φ = 92983572.

The previous prime is 97210093. The next prime is 97210123. The reversal of 97210121 is 12101279.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 97210121 - 2¹⁰ = 97209097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 4226527 = 97210121 / (9 + 7 + 2 + 1 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97210123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2113241 + ... + 2113286.

It is an arithmetic number, because the mean of its divisors is an integer number (25359168).

Almost surely, 2^97210121 is an apocalyptic number.

It is an amenable number.

97210121 is a deficient number, since it is larger than the sum of its proper divisors (4226551).

97210121 is a wasteful number, since it uses less digits than its factorization.

97210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226550.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 97210121 is about 9859.5193087696. The cubic root of 97210121 is about 459.8016173550.

The spelling of 97210121 in words is "ninety-seven million, two hundred ten thousand, one hundred twenty-one".