21200000220201 has 64 divisors (see below), whose sum is σ = 31206235447296. Its totient is φ = 12695514796800.

The previous prime is 21200000220167. The next prime is 21200000220209. The reversal of 21200000220201 is 10202200000212.

It is not a de Polignac number, because 21200000220201 - 2¹⁹ = 21199999695913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200000220209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 641028496 + ... + 641061566.

It is an arithmetic number, because the mean of its divisors is an integer number (487597428864).

Almost surely, 2^{21200000220201} is an apocalyptic number.

It is an amenable number.

21200000220201 is a deficient number, since it is larger than the sum of its proper divisors (10006235227095).

21200000220201 is a wasteful number, since it uses less digits than its factorization.

21200000220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33942.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21200000220201 its reverse (10202200000212), we get a palindrome (31402200220413).

The spelling of 21200000220201 in words is "twenty-one trillion, two hundred billion, two hundred twenty thousand, two hundred one".