22222021202001 has 24 divisors (see below), whose sum is σ = 32947696290600. Its totient is φ = 14427541728000.

The previous prime is 22222021201999. The next prime is 22222021202041. The reversal of 22222021202001 is 10020212022222.

22222021202001 is a `hidden beast` number, since 222 + 220 + 2 + 1 + 20 + 200 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 977517803025 + 21244503398976 = 988695^2 + 4609176^2 .

It is not a de Polignac number, because 22222021202001 - 2¹ = 22222021201999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22222021202041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200327076 + ... + 200437973.

It is an arithmetic number, because the mean of its divisors is an integer number (1372820678775).

Almost surely, 2^{22222021202001} is an apocalyptic number.

It is an amenable number.

22222021202001 is a deficient number, since it is larger than the sum of its proper divisors (10725675088599).

22222021202001 is a wasteful number, since it uses less digits than its factorization.

22222021202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400765217 (or 400765214 counting only the distinct ones).

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

Adding to 22222021202001 its reverse (10020212022222), we get a palindrome (32242233224223).

The spelling of 22222021202001 in words is "twenty-two trillion, two hundred twenty-two billion, twenty-one million, two hundred two thousand, one".