22221013200 has 120 divisors (see below), whose sum is σ = 72524563488. Its totient is φ = 5813783040.

The previous prime is 22221013181. The next prime is 22221013201. The reversal of 22221013200 is 231012222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22221013200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221013201) 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, 111094 + ... + 238293.

Almost surely, 2^22221013200 is an apocalyptic number.

22221013200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221013200 is an abundant number, since it is smaller than the sum of its proper divisors (50303550288).

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

22221013200 is a wasteful number, since it uses less digits than its factorization.

22221013200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349461 (or 349450 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22221013200 its reverse (231012222), we get a palindrome (22452025422).

The spelling of 22221013200 in words is "twenty-two billion, two hundred twenty-one million, thirteen thousand, two hundred".