22185050000 has 60 divisors (see below), whose sum is σ = 53726100372. Its totient is φ = 8874000000.

The previous prime is 22185049981. The next prime is 22185050051. The reversal of 22185050000 is 5058122.

It can be written as a sum of positive squares in 6 ways, for example, as 15190069504 + 6994980496 = 123248^2 + 83636^2 .

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, 171851 + ... + 271850.

Almost surely, 2^22185050000 is an apocalyptic number.

22185050000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22185050000 is an abundant number, since it is smaller than the sum of its proper divisors (31541050372).

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

22185050000 is an frugal number, since it uses more digits than its factorization.

22185050000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443734 (or 443708 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 22185050000 in words is "twenty-two billion, one hundred eighty-five million, fifty thousand".