21222022002201 has 12 divisors (see below), whose sum is σ = 30656405103012. Its totient is φ = 14146919288736.

The previous prime is 21222022002197. The next prime is 21222022002229. The reversal of 21222022002201 is 10220022022212.

21222022002201 is a `hidden beast` number, since 2 + 1 + 2 + 220 + 220 + 0 + 220 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17239303296576 + 3982718705625 = 4152024^2 + 1995675^2 .

It is not a de Polignac number, because 21222022002201 - 2² = 21222022002197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21222022002271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91158906 + ... + 91391411.

It is an arithmetic number, because the mean of its divisors is an integer number (2554700425251).

Almost surely, 2^{21222022002201} is an apocalyptic number.

It is an amenable number.

21222022002201 is a deficient number, since it is larger than the sum of its proper divisors (9434383100811).

21222022002201 is a wasteful number, since it uses less digits than its factorization.

21222022002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182563240 (or 182563237 counting only the distinct ones).

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

Adding to 21222022002201 its reverse (10220022022212), we get a palindrome (31442044024413).

The spelling of 21222022002201 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-two million, two thousand, two hundred one".