20202021982 has 16 divisors (see below), whose sum is σ = 30480831360. Its totient is φ = 10041776728.

The previous prime is 20202021949. The next prime is 20202021997. The reversal of 20202021982 is 28912020202.

It is a super-2 number, since 2×20202021982² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20202021982.

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, 1966383 + ... + 1976629.

It is an arithmetic number, because the mean of its divisors is an integer number (1905051960).

Almost surely, 2^20202021982 is an apocalyptic number.

20202021982 is a deficient number, since it is larger than the sum of its proper divisors (10278809378).

20202021982 is a wasteful number, since it uses less digits than its factorization.

20202021982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15935.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 20202021982 in words is "twenty billion, two hundred two million, twenty-one thousand, nine hundred eighty-two".