121123212313 has 16 divisors (see below), whose sum is σ = 127305674496. Its totient is φ = 115136295120.

The previous prime is 121123212299. The next prime is 121123212317. The reversal of 121123212313 is 313212321121.

It is a cyclic number.

It is not a de Polignac number, because 121123212313 - 2⁹ = 121123211801 is a prime.

It is a super-2 number, since 2×121123212313² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121123212317) 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, 14143 + ... + 492388.

It is an arithmetic number, because the mean of its divisors is an integer number (7956604656).

Almost surely, 2^121123212313 is an apocalyptic number.

It is an amenable number.

121123212313 is a deficient number, since it is larger than the sum of its proper divisors (6182462183).

121123212313 is an equidigital number, since it uses as much as digits as its factorization.

121123212313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506724.

The product of its digits is 432, while the sum is 22.

Adding to 121123212313 its reverse (313212321121), we get a palindrome (434335533434).

The spelling of 121123212313 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twelve thousand, three hundred thirteen".