202121221022 has 48 divisors (see below), whose sum is σ = 357410046672. Its totient is φ = 85464650880.

The previous prime is 202121221009. The next prime is 202121221037. The reversal of 202121221022 is 220122121202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6173648 + ... + 6206300.

It is an arithmetic number, because the mean of its divisors is an integer number (7446042639).

Almost surely, 2^202121221022 is an apocalyptic number.

202121221022 is a deficient number, since it is larger than the sum of its proper divisors (155288825650).

202121221022 is a wasteful number, since it uses less digits than its factorization.

202121221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33513 (or 33506 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202121221022 its reverse (220122121202), we get a palindrome (422243342224).

The spelling of 202121221022 in words is "two hundred two billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-two".