202212222221221 has 16 divisors (see below), whose sum is σ = 212885638292800. Its totient is φ = 191541875430528.

The previous prime is 202212222221209. The next prime is 202212222221341. The reversal of 202212222221221 is 122122222212202.

It is a cyclic number.

It is not a de Polignac number, because 202212222221221 - 2²⁷ = 202212088003493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212222221021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5719786081 + ... + 5719821433.

It is an arithmetic number, because the mean of its divisors is an integer number (13305352393300).

Almost surely, 2^{202212222221221} is an apocalyptic number.

It is an amenable number.

202212222221221 is a deficient number, since it is larger than the sum of its proper divisors (10673416071579).

202212222221221 is a wasteful number, since it uses less digits than its factorization.

202212222221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70228.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 202212222221221 its reverse (122122222212202), we get a palindrome (324334444433423).

The spelling of 202212222221221 in words is "two hundred two trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".