22121224002 has 48 divisors (see below), whose sum is σ = 48191581152. Its totient is φ = 7333464960.

The previous prime is 22121223959. The next prime is 22121224019. The reversal of 22121224002 is 20042212122.

22121224002 is a `hidden beast` number, since 221 + 21 + 22 + 400 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4847802 + ... + 4852362.

It is an arithmetic number, because the mean of its divisors is an integer number (1003991274).

Almost surely, 2^22121224002 is an apocalyptic number.

22121224002 is an abundant number, since it is smaller than the sum of its proper divisors (26070357150).

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

22121224002 is a wasteful number, since it uses less digits than its factorization.

22121224002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983 (or 5980 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22121224002 its reverse (20042212122), we get a palindrome (42163436124).

The spelling of 22121224002 in words is "twenty-two billion, one hundred twenty-one million, two hundred twenty-four thousand, two".