22011220998 has 48 divisors (see below), whose sum is σ = 51372135360. Its totient is φ = 6771019392.

The previous prime is 22011220991. The next prime is 22011220999. The reversal of 22011220998 is 89902211022.

It is a super-2 number, since 2×22011220998² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011220991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1224963 + ... + 1242801.

It is an arithmetic number, because the mean of its divisors is an integer number (1070252820).

Almost surely, 2^22011220998 is an apocalyptic number.

22011220998 is an abundant number, since it is smaller than the sum of its proper divisors (29360914362).

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

22011220998 is a wasteful number, since it uses less digits than its factorization.

22011220998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23133 (or 23130 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 22011220998 in words is "twenty-two billion, eleven million, two hundred twenty thousand, nine hundred ninety-eight".