202212221202121 has 32 divisors (see below), whose sum is σ = 226349298153216. Its totient is φ = 179486889120000.

The previous prime is 202212221202119. The next prime is 202212221202139. The reversal of 202212221202121 is 121202122212202.

It is a cyclic number.

It is not a de Polignac number, because 202212221202121 - 2¹ = 202212221202119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202212221202092 and 202212221202101.

It is not an unprimeable number, because it can be changed into a prime (202212221202181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9941550 + ... + 22433431.

It is an arithmetic number, because the mean of its divisors is an integer number (7073415567288).

Almost surely, 2^{202212221202121} is an apocalyptic number.

It is an amenable number.

202212221202121 is a deficient number, since it is larger than the sum of its proper divisors (24137076951095).

202212221202121 is a wasteful number, since it uses less digits than its factorization.

202212221202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32375233.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 202212221202121 its reverse (121202122212202), we get a palindrome (323414343414323).

The spelling of 202212221202121 in words is "two hundred two trillion, two hundred twelve billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty-one".