22102778120 has 16 divisors (see below), whose sum is σ = 49731250860. Its totient is φ = 8841111232.

The previous prime is 22102778111. The next prime is 22102778143. The reversal of 22102778120 is 2187720122.

It can be written as a sum of positive squares in 2 ways, for example, as 20241891076 + 1860887044 = 142274^2 + 43138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276284687 + ... + 276284766.

Almost surely, 2^22102778120 is an apocalyptic number.

22102778120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22102778120 is an abundant number, since it is smaller than the sum of its proper divisors (27628472740).

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

22102778120 is a wasteful number, since it uses less digits than its factorization.

22102778120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552569464 (or 552569460 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 22102778120 in words is "twenty-two billion, one hundred two million, seven hundred seventy-eight thousand, one hundred twenty".