122120202020020 has 96 divisors (see below), whose sum is σ = 263260051084800. Its totient is φ = 47558821330944.

The previous prime is 122120202019873. The next prime is 122120202020027. The reversal of 122120202020020 is 20020202021221.

It is a junction number, because it is equal to n+sod(n) for n = 122120202019976 and 122120202020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120202020027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652924276 + ... + 653111284.

It is an arithmetic number, because the mean of its divisors is an integer number (2742292198800).

Almost surely, 2^{122120202020020} is an apocalyptic number.

122120202020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122120202020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131630025542400).

122120202020020 is an abundant number, since it is smaller than the sum of its proper divisors (141139849064780).

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

122120202020020 is a wasteful number, since it uses less digits than its factorization.

122120202020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189497 (or 189495 counting only the distinct ones).

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

Adding to 122120202020020 its reverse (20020202021221), we get a palindrome (142140404041241).

The spelling of 122120202020020 in words is "one hundred twenty-two trillion, one hundred twenty billion, two hundred two million, twenty thousand, twenty".