20112122220020 has 24 divisors (see below), whose sum is σ = 42236174379168. Its totient is φ = 8044712180000.

The previous prime is 20112122219993. The next prime is 20112122220041. The reversal of 20112122220020 is 2002222121102.

It is a happy number.

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, 7333706 + ... + 9695745.

It is an arithmetic number, because the mean of its divisors is an integer number (1759840599132).

Almost surely, 2^{20112122220020} is an apocalyptic number.

20112122220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112122220020 is an abundant number, since it is smaller than the sum of its proper divisors (22124052159148).

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

20112122220020 is a wasteful number, since it uses less digits than its factorization.

20112122220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17088511 (or 17088509 counting only the distinct ones).

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

Adding to 20112122220020 its reverse (2002222121102), we get a palindrome (22114344341122).

The spelling of 20112122220020 in words is "twenty trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, twenty".