122000002100020 has 24 divisors (see below), whose sum is σ = 279490913902368. Its totient is φ = 44363637127200.

The previous prime is 122000002099991. The next prime is 122000002100059. The reversal of 122000002100020 is 20001200000221.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 277272731826 + ... + 277272732265.

It is an arithmetic number, because the mean of its divisors is an integer number (11645454745932).

Almost surely, 2^{122000002100020} is an apocalyptic number.

122000002100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122000002100020 is an abundant number, since it is smaller than the sum of its proper divisors (157490911802348).

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

122000002100020 is a wasteful number, since it uses less digits than its factorization.

122000002100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554545464111 (or 554545464109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 122000002100020 its reverse (20001200000221), we get a palindrome (142001202100241).

The spelling of 122000002100020 in words is "one hundred twenty-two trillion, two million, one hundred thousand, twenty".