22212220100 has 72 divisors (see below), whose sum is σ = 57481404288. Its totient is φ = 7284499200.

The previous prime is 22212220073. The next prime is 22212220109. The reversal of 22212220100 is 102221222.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (22212220109) 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, 673721 + ... + 705920.

Almost surely, 2^22212220100 is an apocalyptic number.

22212220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212220100 is an abundant number, since it is smaller than the sum of its proper divisors (35269184188).

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

22212220100 is a wasteful number, since it uses less digits than its factorization.

22212220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379685 (or 1379678 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22212220100 its reverse (102221222), we get a palindrome (22314441322).

The spelling of 22212220100 in words is "twenty-two billion, two hundred twelve million, two hundred twenty thousand, one hundred".