202222012210121 has 4 divisors (see below), whose sum is σ = 202222041008592. Its totient is φ = 202221983411652.

The previous prime is 202222012210117. The next prime is 202222012210123. The reversal of 202222012210121 is 121012210222202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 202222012210121 - 2² = 202222012210117 is a prime.

It is a super-2 number, since 2×202222012210121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202222012210093 and 202222012210102.

It is not an unprimeable number, because it can be changed into a prime (202222012210123) 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 3 ways as a sum of consecutive naturals, for example, 3806846 + ... + 20467928.

It is an arithmetic number, because the mean of its divisors is an integer number (50555510252148).

Almost surely, 2^{202222012210121} is an apocalyptic number.

It is an amenable number.

202222012210121 is a deficient number, since it is larger than the sum of its proper divisors (28798471).

202222012210121 is a wasteful number, since it uses less digits than its factorization.

202222012210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28798470.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202222012210121 its reverse (121012210222202), we get a palindrome (323234222432323).

The spelling of 202222012210121 in words is "two hundred two trillion, two hundred twenty-two billion, twelve million, two hundred ten thousand, one hundred twenty-one".