210021221201 has 8 divisors (see below), whose sum is σ = 230486001984. Its totient is φ = 189785097520.

The previous prime is 210021221173. The next prime is 210021221237. The reversal of 210021221201 is 102122120012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210021221201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210021226201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57162350 + ... + 57166023.

It is an arithmetic number, because the mean of its divisors is an integer number (28810750248).

Almost surely, 2^210021221201 is an apocalyptic number.

It is an amenable number.

210021221201 is a deficient number, since it is larger than the sum of its proper divisors (20464780783).

210021221201 is a wasteful number, since it uses less digits than its factorization.

210021221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114328551.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210021221201 its reverse (102122120012), we get a palindrome (312143341213).

The spelling of 210021221201 in words is "two hundred ten billion, twenty-one million, two hundred twenty-one thousand, two hundred one".