100000022100 has 144 divisors (see below), whose sum is σ = 324167543616. Its totient is φ = 23587200000.

The previous prime is 100000022099. The next prime is 100000022113. The reversal of 100000022100 is 1220000001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 287401 + ... + 531600.

Almost surely, 2^100000022100 is an apocalyptic number.

100000022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100000022100 is an abundant number, since it is smaller than the sum of its proper divisors (224167521516).

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

100000022100 is a wasteful number, since it uses less digits than its factorization.

100000022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819066 (or 819059 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 100000022100 its reverse (1220000001), we get a palindrome (101220022101).

The spelling of 100000022100 in words is "one hundred billion, twenty-two thousand, one hundred".