20102122122020 has 24 divisors (see below), whose sum is σ = 43196188003584. Its totient is φ = 7853852363616.

The previous prime is 20102122121981. The next prime is 20102122122031. The reversal of 20102122122020 is 2022122120102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102122122020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11687279444 + ... + 11687281163.

It is an arithmetic number, because the mean of its divisors is an integer number (1799841166816).

Almost surely, 2^{20102122122020} is an apocalyptic number.

20102122122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102122122020 is an abundant number, since it is smaller than the sum of its proper divisors (23094065881564).

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

20102122122020 is a wasteful number, since it uses less digits than its factorization.

20102122122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23374560659 (or 23374560657 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20102122122020 its reverse (2022122120102), we get a palindrome (22124244242122).

The spelling of 20102122122020 in words is "twenty trillion, one hundred two billion, one hundred twenty-two million, one hundred twenty-two thousand, twenty".