22221004000 has 96 divisors (see below), whose sum is σ = 58796914176. Its totient is φ = 8204659200.

The previous prime is 22221003997. The next prime is 22221004027. The reversal of 22221004000 is 40012222.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161664 + ... + 265663.

It is an arithmetic number, because the mean of its divisors is an integer number (612467856).

Almost surely, 2^22221004000 is an apocalyptic number.

22221004000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221004000 is an abundant number, since it is smaller than the sum of its proper divisors (36575910176).

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

22221004000 is a wasteful number, since it uses less digits than its factorization.

22221004000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427365 (or 427347 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22221004000 its reverse (40012222), we get a palindrome (22261016222).

The spelling of 22221004000 in words is "twenty-two billion, two hundred twenty-one million, four thousand".