202102122220020 has 432 divisors, whose sum is σ = 709510271049216. Its totient is φ = 46132509312000.

The previous prime is 202102122220001. The next prime is 202102122220039. The reversal of 202102122220020 is 20022221201202.

202102122220020 is a `hidden beast` number, since 2 + 0 + 210 + 212 + 2 + 220 + 0 + 20 = 666.

202102122220020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (202102122220001) and next prime (202102122220039).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 202102122219975 and 202102122220002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 82826650 + ... + 85231790.

It is an arithmetic number, because the mean of its divisors is an integer number (1642384886688).

Almost surely, 2^{202102122220020} is an apocalyptic number.

202102122220020 is a gapful number since it is divisible by the number (20) 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 202102122220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354755135524608).

202102122220020 is an abundant number, since it is smaller than the sum of its proper divisors (507408148829196).

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

202102122220020 is a wasteful number, since it uses less digits than its factorization.

202102122220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405272 (or 2405230 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202102122220020 its reverse (20022221201202), we get a palindrome (222124343421222).

The spelling of 202102122220020 in words is "two hundred two trillion, one hundred two billion, one hundred twenty-two million, two hundred twenty thousand, twenty".