22021222022001 has 24 divisors (see below), whose sum is σ = 31838651955240. Its totient is φ = 14666871225600.

The previous prime is 22021222021991. The next prime is 22021222022003. The reversal of 22021222022001 is 10022022212022.

22021222022001 is a `hidden beast` number, since 220 + 2 + 1 + 2 + 220 + 220 + 0 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16783966886976 + 5237255135025 = 4096824^2 + 2288505^2 .

It is not a de Polignac number, because 22021222022001 - 2¹⁵ = 22021221989233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22021222022003) 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, 62371995 + ... + 62724063.

It is an arithmetic number, because the mean of its divisors is an integer number (1326610498135).

Almost surely, 2^{22021222022001} is an apocalyptic number.

It is an amenable number.

22021222022001 is a deficient number, since it is larger than the sum of its proper divisors (9817429933239).

22021222022001 is a wasteful number, since it uses less digits than its factorization.

22021222022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358657 (or 358654 counting only the distinct ones).

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

Adding to 22021222022001 its reverse (10022022212022), we get a palindrome (32043244234023).

The spelling of 22021222022001 in words is "twenty-two trillion, twenty-one billion, two hundred twenty-two million, twenty-two thousand, one".