23102221998 has 16 divisors (see below), whose sum is σ = 46206622800. Its totient is φ = 7700377536.

The previous prime is 23102221997. The next prime is 23102222009. The reversal of 23102221998 is 89912220132.

It is a super-2 number, since 2×23102221998² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23102221997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68578 + ... + 225626.

It is an arithmetic number, because the mean of its divisors is an integer number (2887913925).

Almost surely, 2^23102221998 is an apocalyptic number.

23102221998 is an abundant number, since it is smaller than the sum of its proper divisors (23104400802).

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

23102221998 is a wasteful number, since it uses less digits than its factorization.

23102221998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181571.

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 23102221998 in words is "twenty-three billion, one hundred two million, two hundred twenty-one thousand, nine hundred ninety-eight".