20221121982 has 16 divisors (see below), whose sum is σ = 42570783360. Its totient is φ = 6385617432.

The previous prime is 20221121953. The next prime is 20221122011. The reversal of 20221121982 is 28912112202.

It is an interprime number because it is at equal distance from previous prime (20221121953) and next prime (20221122011).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88689018 + ... + 88689245.

It is an arithmetic number, because the mean of its divisors is an integer number (2660673960).

Almost surely, 2^20221121982 is an apocalyptic number.

20221121982 is an abundant number, since it is smaller than the sum of its proper divisors (22349661378).

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

20221121982 is a wasteful number, since it uses less digits than its factorization.

20221121982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177378287.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 20221121982 in words is "twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, nine hundred eighty-two".