122021122020 has 288 divisors, whose sum is σ = 421807938048. Its totient is φ = 26188259328.

The previous prime is 122021122019. The next prime is 122021122033. The reversal of 122021122020 is 20221120221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23138104 + ... + 23143376.

It is an arithmetic number, because the mean of its divisors is an integer number (1464610896).

Almost surely, 2^122021122020 is an apocalyptic number.

122021122020 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 122021122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210903969024).

122021122020 is an abundant number, since it is smaller than the sum of its proper divisors (299786816028).

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

122021122020 is a wasteful number, since it uses less digits than its factorization.

122021122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5779 (or 5770 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122021122020 its reverse (20221120221), we get a palindrome (142242242241).

The spelling of 122021122020 in words is "one hundred twenty-two billion, twenty-one million, one hundred twenty-two thousand, twenty".