21122021022201 has 12 divisors (see below), whose sum is σ = 33283184641200. Its totient is φ = 12801224861880.

The previous prime is 21122021022199. The next prime is 21122021022211. The reversal of 21122021022201 is 10222012022112.

It is a happy number.

21122021022201 is a `hidden beast` number, since 2 + 11 + 220 + 210 + 2 + 220 + 1 = 666.

It is not a de Polignac number, because 21122021022201 - 2¹ = 21122021022199 is a prime.

It is a super-2 number, since 2×21122021022201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122021022211) 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, 106676873751 + ... + 106676873948.

It is an arithmetic number, because the mean of its divisors is an integer number (2773598720100).

Almost surely, 2^{21122021022201} is an apocalyptic number.

It is an amenable number.

21122021022201 is a deficient number, since it is larger than the sum of its proper divisors (12161163618999).

21122021022201 is a wasteful number, since it uses less digits than its factorization.

21122021022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213353747716 (or 213353747713 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21122021022201 its reverse (10222012022112), we get a palindrome (31344033044313).

The spelling of 21122021022201 in words is "twenty-one trillion, one hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred one".