210972241 has 4 divisors (see below), whose sum is σ = 211086400. Its totient is φ = 210858084.

The previous prime is 210972199. The next prime is 210972247. The reversal of 210972241 is 142279012.

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 a cyclic number.

It is not a de Polignac number, because 210972241 - 2²¹ = 208875089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210972247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54261 + ... + 58018.

It is an arithmetic number, because the mean of its divisors is an integer number (52771600).

Almost surely, 2^210972241 is an apocalyptic number.

It is an amenable number.

210972241 is a deficient number, since it is larger than the sum of its proper divisors (114159).

210972241 is a wasteful number, since it uses less digits than its factorization.

210972241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114158.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 210972241 is about 14524.8835107205. The cubic root of 210972241 is about 595.3080729311.

The spelling of 210972241 in words is "two hundred ten million, nine hundred seventy-two thousand, two hundred forty-one".