22102021100 has 18 divisors (see below), whose sum is σ = 47961386004. Its totient is φ = 8840808400.

The previous prime is 22102021061. The next prime is 22102021121. The reversal of 22102021100 is 112020122.

It is a happy number.

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, 110510006 + ... + 110510205.

Almost surely, 2^22102021100 is an apocalyptic number.

22102021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22102021100 is an abundant number, since it is smaller than the sum of its proper divisors (25859364904).

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

22102021100 is a wasteful number, since it uses less digits than its factorization.

22102021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221020225 (or 221020218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22102021100 its reverse (112020122), we get a palindrome (22214041222).

The spelling of 22102021100 in words is "twenty-two billion, one hundred two million, twenty-one thousand, one hundred".