202102120121022 has 128 divisors (see below), whose sum is σ = 511276772736000. Its totient is φ = 58576852477440.

The previous prime is 202102120120951. The next prime is 202102120121093. The reversal of 202102120121022 is 220121021201202.

It is a happy number.

202102120121022 is a `hidden beast` number, since 2 + 0 + 210 + 21 + 201 + 210 + 22 = 666.

202102120121022 is digitally balanced in base 2, 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 (202102120120951) and next prime (202102120121093).

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 = 202102120120986 and 202102120121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234679554 + ... + 235539162.

It is an arithmetic number, because the mean of its divisors is an integer number (3994349787000).

Almost surely, 2^{202102120121022} is an apocalyptic number.

202102120121022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 202102120121022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255638386368000).

202102120121022 is an abundant number, since it is smaller than the sum of its proper divisors (309174652614978).

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

202102120121022 is a wasteful number, since it uses less digits than its factorization.

202102120121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876863 (or 876857 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202102120121022 its reverse (220121021201202), we get a palindrome (422223141322224).

The spelling of 202102120121022 in words is "two hundred two trillion, one hundred two billion, one hundred twenty million, one hundred twenty-one thousand, twenty-two".