22101210100 has 36 divisors (see below), whose sum is σ = 48003983104. Its totient is φ = 8832307680.

The previous prime is 22101210083. The next prime is 22101210101. The reversal of 22101210100 is 101210122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101210101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7039 + ... + 210361.

Almost surely, 2^22101210100 is an apocalyptic number.

22101210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101210100 is an abundant number, since it is smaller than the sum of its proper divisors (25902773004).

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

22101210100 is a wasteful number, since it uses less digits than its factorization.

22101210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204424 (or 204417 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 22101210100 its reverse (101210122), we get a palindrome (22202420222).

The spelling of 22101210100 in words is "twenty-two billion, one hundred one million, two hundred ten thousand, one hundred".