202212222212121 has 64 divisors (see below), whose sum is σ = 314644757686272. Its totient is φ = 114153609600000.

The previous prime is 202212222212113. The next prime is 202212222212137. The reversal of 202212222212121 is 121212222212202.

It is a happy number.

It is not a de Polignac number, because 202212222212121 - 2³ = 202212222212113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202212222212091 and 202212222212100.

It is not an unprimeable number, because it can be changed into a prime (202212222212111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133590636 + ... + 135095826.

It is an arithmetic number, because the mean of its divisors is an integer number (4916324338848).

Almost surely, 2^{202212222212121} is an apocalyptic number.

It is an amenable number.

202212222212121 is a deficient number, since it is larger than the sum of its proper divisors (112432535474151).

202212222212121 is a wasteful number, since it uses less digits than its factorization.

202212222212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507694.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 202212222212121 its reverse (121212222212202), we get a palindrome (323424444424323).

The spelling of 202212222212121 in words is "two hundred two trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".