122122120200020 has 48 divisors (see below), whose sum is σ = 257787132960000. Its totient is φ = 48595465036800.

The previous prime is 122122120200019. The next prime is 122122120200049. The reversal of 122122120200020 is 20002021221221.

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 15 ways as a sum of consecutive naturals, for example, 21986756 + ... + 26975204.

It is an arithmetic number, because the mean of its divisors is an integer number (5370565270000).

Almost surely, 2^{122122120200020} is an apocalyptic number.

122122120200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122122120200020 is an abundant number, since it is smaller than the sum of its proper divisors (135665012759980).

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

122122120200020 is a wasteful number, since it uses less digits than its factorization.

122122120200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994808 (or 4994806 counting only the distinct ones).

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

Adding to 122122120200020 its reverse (20002021221221), we get a palindrome (142124141421241).

The spelling of 122122120200020 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, one hundred twenty million, two hundred thousand, twenty".