22120011998 has 8 divisors (see below), whose sum is σ = 37920020592. Its totient is φ = 9480005136.

The previous prime is 22120011997. The next prime is 22120012051. The reversal of 22120011998 is 89911002122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120011997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790000415 + ... + 790000442.

It is an arithmetic number, because the mean of its divisors is an integer number (4740002574).

Almost surely, 2^22120011998 is an apocalyptic number.

22120011998 is a deficient number, since it is larger than the sum of its proper divisors (15800008594).

22120011998 is a wasteful number, since it uses less digits than its factorization.

22120011998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580000866.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 22120011998 in words is "twenty-two billion, one hundred twenty million, eleven thousand, nine hundred ninety-eight".