210021220201 has 32 divisors (see below), whose sum is σ = 236907740160. Its totient is φ = 184863686400.

The previous prime is 210021220193. The next prime is 210021220229. The reversal of 210021220201 is 102022120012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210021220201 - 2³ = 210021220193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (210021220271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13003591 + ... + 13019731.

It is an arithmetic number, because the mean of its divisors is an integer number (7403366880).

Almost surely, 2^210021220201 is an apocalyptic number.

It is an amenable number.

210021220201 is a deficient number, since it is larger than the sum of its proper divisors (26886519959).

210021220201 is a wasteful number, since it uses less digits than its factorization.

210021220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16657.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210021220201 its reverse (102022120012), we get a palindrome (312043340213).

The spelling of 210021220201 in words is "two hundred ten billion, twenty-one million, two hundred twenty thousand, two hundred one".