121313222233221 has 16 divisors (see below), whose sum is σ = 166123007561664. Its totient is φ = 78689469642624.

The previous prime is 121313222233157. The next prime is 121313222233319. The reversal of 121313222233221 is 122332222313121.

It is a happy number.

It is not a de Polignac number, because 121313222233221 - 2⁶ = 121313222233157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313227233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57056401 + ... + 59144393.

It is an arithmetic number, because the mean of its divisors is an integer number (10382687972604).

Almost surely, 2^{121313222233221} is an apocalyptic number.

It is an amenable number.

121313222233221 is a deficient number, since it is larger than the sum of its proper divisors (44809785328443).

121313222233221 is a wasteful number, since it uses less digits than its factorization.

121313222233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611460.

The product of its digits is 10368, while the sum is 30.

Adding to 121313222233221 its reverse (122332222313121), we get a palindrome (243645444546342).

The spelling of 121313222233221 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred twenty-two million, two hundred thirty-three thousand, two hundred twenty-one".