20210012220020 has 72 divisors (see below), whose sum is σ = 49487442537960. Its totient is φ = 6912688124160.

The previous prime is 20210012220001. The next prime is 20210012220049. The reversal of 20210012220020 is 2002221001202.

It can be written as a sum of positive squares in 4 ways, for example, as 538764808036 + 19671247411984 = 734006^2 + 4435228^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20210012219977 and 20210012220004.

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 23 ways as a sum of consecutive naturals, for example, 24079655 + ... + 24904814.

It is an arithmetic number, because the mean of its divisors is an integer number (687325590805).

Almost surely, 2^{20210012220020} is an apocalyptic number.

20210012220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210012220020 is an abundant number, since it is smaller than the sum of its proper divisors (29277430317940).

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

20210012220020 is a wasteful number, since it uses less digits than its factorization.

20210012220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48984913 (or 48984904 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20210012220020 its reverse (2002221001202), we get a palindrome (22212233221222).

The spelling of 20210012220020 in words is "twenty trillion, two hundred ten billion, twelve million, two hundred twenty thousand, twenty".