21222002220201 has 48 divisors (see below), whose sum is σ = 32067721820160. Its totient is φ = 13510707154560.

The previous prime is 21222002220193. The next prime is 21222002220233. The reversal of 21222002220201 is 10202220022212.

21222002220201 is a `hidden beast` number, since 21 + 2 + 220 + 0 + 2 + 220 + 201 = 666.

It is not a de Polignac number, because 21222002220201 - 2³ = 21222002220193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21222002220241) 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 47 ways as a sum of consecutive naturals, for example, 8276680 + ... + 10533158.

It is an arithmetic number, because the mean of its divisors is an integer number (668077537920).

Almost surely, 2^{21222002220201} is an apocalyptic number.

It is an amenable number.

21222002220201 is a deficient number, since it is larger than the sum of its proper divisors (10845719599959).

21222002220201 is a wasteful number, since it uses less digits than its factorization.

21222002220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257046 (or 2257043 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21222002220201 its reverse (10202220022212), we get a palindrome (31424222242413).

The spelling of 21222002220201 in words is "twenty-one trillion, two hundred twenty-two billion, two million, two hundred twenty thousand, two hundred one".