202222201212121 has 8 divisors (see below), whose sum is σ = 214656963925320. Its totient is φ = 189847365067008.

The previous prime is 202222201212067. The next prime is 202222201212167. The reversal of 202222201212121 is 121212102222202.

It can be written as a sum of positive squares in 4 ways, for example, as 146188532814025 + 56033668398096 = 12090845^2 + 7485564^2 .

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 202222201212121 - 2⁹ = 202222201211609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202222201212092 and 202222201212101.

It is not an unprimeable number, because it can be changed into a prime (202222201812121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14981635066 + ... + 14981648563.

It is an arithmetic number, because the mean of its divisors is an integer number (26832120490665).

Almost surely, 2^{202222201212121} is an apocalyptic number.

It is an amenable number.

202222201212121 is a deficient number, since it is larger than the sum of its proper divisors (12434762713199).

202222201212121 is a wasteful number, since it uses less digits than its factorization.

202222201212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29963284043.

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

Adding to 202222201212121 its reverse (121212102222202), we get a palindrome (323434303434323).

The spelling of 202222201212121 in words is "two hundred two trillion, two hundred twenty-two billion, two hundred one million, two hundred twelve thousand, one hundred twenty-one".