20020121022 has 16 divisors (see below), whose sum is σ = 43680264192. Its totient is φ = 6066703320.

The previous prime is 20020120997. The next prime is 20020121057. The reversal of 20020121022 is 22012102002.

It is a junction number, because it is equal to n+sod(n) for n = 20020120989 and 20020121007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151667518 + ... + 151667649.

It is an arithmetic number, because the mean of its divisors is an integer number (2730016512).

Almost surely, 2^20020121022 is an apocalyptic number.

20020121022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20020121022 is an abundant number, since it is smaller than the sum of its proper divisors (23660143170).

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

20020121022 is a wasteful number, since it uses less digits than its factorization.

20020121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303335183.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20020121022 its reverse (22012102002), we get a palindrome (42032223024).

The spelling of 20020121022 in words is "twenty billion, twenty million, one hundred twenty-one thousand, twenty-two".