22222303400 has 144 divisors (see below), whose sum is σ = 58178581020. Its totient is φ = 7883392000.

The previous prime is 22222303399. The next prime is 22222303429. The reversal of 22222303400 is 430322222.

It can be written as a sum of positive squares in 6 ways, for example, as 8363834116 + 13858469284 = 91454^2 + 117722^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 981002 + ... + 1003398.

Almost surely, 2^22222303400 is an apocalyptic number.

22222303400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22222303400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29089290510).

22222303400 is an abundant number, since it is smaller than the sum of its proper divisors (35956277620).

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

22222303400 is a wasteful number, since it uses less digits than its factorization.

22222303400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22476 (or 22456 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 22222303400 its reverse (430322222), we get a palindrome (22652625622).

The spelling of 22222303400 in words is "twenty-two billion, two hundred twenty-two million, three hundred three thousand, four hundred".