202212122221 has 8 divisors (see below), whose sum is σ = 208414954944. Its totient is φ = 196069805280.

The previous prime is 202212122219. The next prime is 202212122237. The reversal of 202212122221 is 122221212202.

202212122221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202212122221 - 2¹ = 202212122219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212122261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15122161 + ... + 15135526.

It is an arithmetic number, because the mean of its divisors is an integer number (26051869368).

Almost surely, 2^202212122221 is an apocalyptic number.

It is an amenable number.

202212122221 is a deficient number, since it is larger than the sum of its proper divisors (6202832723).

202212122221 is a wasteful number, since it uses less digits than its factorization.

202212122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30257891.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202212122221 its reverse (122221212202), we get a palindrome (324433334423).

The spelling of 202212122221 in words is "two hundred two billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".