202121021022 has 16 divisors (see below), whose sum is σ = 404685787392. Its totient is φ = 67299716120.

The previous prime is 202121020999. The next prime is 202121021027. The reversal of 202121021022 is 220120121202.

It is a junction number, because it is equal to n+sod(n) for n = 202121020992 and 202121021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121021027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18483468 + ... + 18494399.

It is an arithmetic number, because the mean of its divisors is an integer number (25292861712).

Almost surely, 2^202121021022 is an apocalyptic number.

202121021022 is an abundant number, since it is smaller than the sum of its proper divisors (202564766370).

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

202121021022 is a wasteful number, since it uses less digits than its factorization.

202121021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36978783.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202121021022 its reverse (220120121202), we get a palindrome (422241142224).

The spelling of 202121021022 in words is "two hundred two billion, one hundred twenty-one million, twenty-one thousand, twenty-two".