22102001001 has 24 divisors (see below), whose sum is σ = 32415321120. Its totient is φ = 14509077696.

The previous prime is 22102000979. The next prime is 22102001021. The reversal of 22102001001 is 10010020122.

It is not a de Polignac number, because 22102001001 - 2⁷ = 22102000873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (22102001021) 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, 379510 + ... + 433856.

It is an arithmetic number, because the mean of its divisors is an integer number (1350638380).

Almost surely, 2^22102001001 is an apocalyptic number.

It is an amenable number.

22102001001 is a deficient number, since it is larger than the sum of its proper divisors (10313320119).

22102001001 is a wasteful number, since it uses less digits than its factorization.

22102001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55045 (or 55042 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 22102001001 its reverse (10010020122), we get a palindrome (32112021123).

The spelling of 22102001001 in words is "twenty-two billion, one hundred two million, one thousand, one".