122120402020 has 48 divisors (see below), whose sum is σ = 285829810560. Its totient is φ = 43555014144.

The previous prime is 122120402011. The next prime is 122120402023. The reversal of 122120402020 is 20204021221.

It is a junction number, because it is equal to n+sod(n) for n = 122120401985 and 122120402003.

It is not an unprimeable number, because it can be changed into a prime (122120402023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9445584 + ... + 9458503.

It is an arithmetic number, because the mean of its divisors is an integer number (5954787720).

Almost surely, 2^122120402020 is an apocalyptic number.

122120402020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122120402020 is an abundant number, since it is smaller than the sum of its proper divisors (163709408540).

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

122120402020 is a wasteful number, since it uses less digits than its factorization.

122120402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18904132 (or 18904130 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 122120402020 its reverse (20204021221), we get a palindrome (142324423241).

The spelling of 122120402020 in words is "one hundred twenty-two billion, one hundred twenty million, four hundred two thousand, twenty".