121221323011313 has 16 divisors (see below), whose sum is σ = 149174224594560. Its totient is φ = 96134500283136.

The previous prime is 121221323011307. The next prime is 121221323011333. The reversal of 121221323011313 is 313110323122121.

It is not a de Polignac number, because 121221323011313 - 2¹⁴ = 121221322994929 is a prime.

It is a super-2 number, since 2×121221323011313² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121221323011333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8632760606 + ... + 8632774647.

It is an arithmetic number, because the mean of its divisors is an integer number (9323389037160).

Almost surely, 2^{121221323011313} is an apocalyptic number.

It is an amenable number.

121221323011313 is a deficient number, since it is larger than the sum of its proper divisors (27952901583247).

121221323011313 is a wasteful number, since it uses less digits than its factorization.

121221323011313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17265535336.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 121221323011313 its reverse (313110323122121), we get a palindrome (434331646133434).

The spelling of 121221323011313 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, three hundred twenty-three million, eleven thousand, three hundred thirteen".