22031220100 has 36 divisors (see below), whose sum is σ = 50323949200. Its totient is φ = 8348672160.

The previous prime is 22031220077. The next prime is 22031220103. The reversal of 22031220100 is 102213022.

It is not an unprimeable number, because it can be changed into a prime (22031220103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5795790 + ... + 5799589.

Almost surely, 2^22031220100 is an apocalyptic number.

22031220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22031220100 is an abundant number, since it is smaller than the sum of its proper divisors (28292729100).

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

22031220100 is a wasteful number, since it uses less digits than its factorization.

22031220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11595412 (or 11595405 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22031220100 its reverse (102213022), we get a palindrome (22133433122).

The spelling of 22031220100 in words is "twenty-two billion, thirty-one million, two hundred twenty thousand, one hundred".