122021001020 has 24 divisors (see below), whose sum is σ = 256261849200. Its totient is φ = 48805020032.

The previous prime is 122021001001. The next prime is 122021001043. The reversal of 122021001020 is 20100120221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122021000992 and 122021001010.

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, 95591 + ... + 503169.

It is an arithmetic number, because the mean of its divisors is an integer number (10677577050).

Almost surely, 2^122021001020 is an apocalyptic number.

122021001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122021001020 is an abundant number, since it is smaller than the sum of its proper divisors (134240848180).

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

122021001020 is a wasteful number, since it uses less digits than its factorization.

122021001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422557 (or 422555 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122021001020 its reverse (20100120221), we get a palindrome (142121121241).

The spelling of 122021001020 in words is "one hundred twenty-two billion, twenty-one million, one thousand, twenty".