20322121020 has 48 divisors (see below), whose sum is σ = 56913819648. Its totient is φ = 5418100800.

The previous prime is 20322121003. The next prime is 20322121031. The reversal of 20322121020 is 2012122302.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277245 + ... + 342795.

It is an arithmetic number, because the mean of its divisors is an integer number (1185704576).

Almost surely, 2^20322121020 is an apocalyptic number.

20322121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20322121020 is an abundant number, since it is smaller than the sum of its proper divisors (36591698628).

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

20322121020 is a wasteful number, since it uses less digits than its factorization.

20322121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70730 (or 70728 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20322121020 its reverse (2012122302), we get a palindrome (22334243322).

The spelling of 20322121020 in words is "twenty billion, three hundred twenty-two million, one hundred twenty-one thousand, twenty".