22121109988 has 48 divisors (see below), whose sum is σ = 42117461568. Its totient is φ = 10124928000.

The previous prime is 22121109979. The next prime is 22121110003. The reversal of 22121109988 is 88990112122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910843 + ... + 934813.

It is an arithmetic number, because the mean of its divisors is an integer number (877447116).

Almost surely, 2^22121109988 is an apocalyptic number.

It is an amenable number.

22121109988 is a deficient number, since it is larger than the sum of its proper divisors (19996351580).

22121109988 is a wasteful number, since it uses less digits than its factorization.

22121109988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24364 (or 24362 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 22121109988 in words is "twenty-two billion, one hundred twenty-one million, one hundred nine thousand, nine hundred eighty-eight".