22100020002 has 12 divisors (see below), whose sum is σ = 47883376710. Its totient is φ = 7366673328.

The previous prime is 22100019989. The next prime is 22100020037. The reversal of 22100020002 is 20002000122.

It can be written as a sum of positive squares in only one way, i.e., 12100220001 + 9999800001 = 110001^2 + 99999^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613889427 + ... + 613889462.

Almost surely, 2^22100020002 is an apocalyptic number.

22100020002 is an abundant number, since it is smaller than the sum of its proper divisors (25783356708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22100020002 is a wasteful number, since it uses less digits than its factorization.

22100020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227778897 (or 1227778894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 22100020002 its reverse (20002000122), we get a palindrome (42102020124).

The spelling of 22100020002 in words is "twenty-two billion, one hundred million, twenty thousand, two".