22001121988 has 12 divisors (see below), whose sum is σ = 38503729600. Its totient is φ = 11000056392.

The previous prime is 22001121959. The next prime is 22001122019. The reversal of 22001121988 is 88912110022.

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, 17688 + ... + 210511.

Almost surely, 2^22001121988 is an apocalyptic number.

It is an amenable number.

22001121988 is a deficient number, since it is larger than the sum of its proper divisors (16502607612).

22001121988 is a wasteful number, since it uses less digits than its factorization.

22001121988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252306 (or 252304 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 22001121988 in words is "twenty-two billion, one million, one hundred twenty-one thousand, nine hundred eighty-eight".