22143454100 has 36 divisors (see below), whose sum is σ = 48238321404. Its totient is φ = 8822906880.

The previous prime is 22143454063. The next prime is 22143454111. The reversal of 22143454100 is 145434122.

It can be written as a sum of positive squares in 6 ways, for example, as 110208004 + 22033246096 = 10498^2 + 148436^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22143454100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405107 + ... + 456506.

Almost surely, 2^22143454100 is an apocalyptic number.

22143454100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22143454100 is an abundant number, since it is smaller than the sum of its proper divisors (26094867304).

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

22143454100 is a wasteful number, since it uses less digits than its factorization.

22143454100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861884 (or 861877 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 22143454100 its reverse (145434122), we get a palindrome (22288888222).

The spelling of 22143454100 in words is "twenty-two billion, one hundred forty-three million, four hundred fifty-four thousand, one hundred".