210616425221 has 24 divisors (see below), whose sum is σ = 222324892800. Its totient is φ = 199432396800.

The previous prime is 210616425181. The next prime is 210616425269. The reversal of 210616425221 is 122524616012.

It is a de Polignac number, because none of the positive numbers 2^k-210616425221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210616428221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7821701 + ... + 7848581.

It is an arithmetic number, because the mean of its divisors is an integer number (9263537200).

Almost surely, 2^210616425221 is an apocalyptic number.

It is an amenable number.

210616425221 is a deficient number, since it is larger than the sum of its proper divisors (11708467579).

210616425221 is an equidigital number, since it uses as much as digits as its factorization.

210616425221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27101 (or 27060 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 210616425221 in words is "two hundred ten billion, six hundred sixteen million, four hundred twenty-five thousand, two hundred twenty-one".