202121022212 has 24 divisors (see below), whose sum is σ = 357277072320. Its totient is φ = 100043232480.

The previous prime is 202121022199. The next prime is 202121022293. The reversal of 202121022212 is 212220121202.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420089 + ... + 762047.

It is an arithmetic number, because the mean of its divisors is an integer number (14886544680).

Almost surely, 2^202121022212 is an apocalyptic number.

It is an amenable number.

202121022212 is a deficient number, since it is larger than the sum of its proper divisors (155156050108).

202121022212 is a wasteful number, since it uses less digits than its factorization.

202121022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343451 (or 343449 counting only the distinct ones).

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

Adding to 202121022212 its reverse (212220121202), we get a palindrome (414341143414).

The spelling of 202121022212 in words is "two hundred two billion, one hundred twenty-one million, twenty-two thousand, two hundred twelve".