121312012213 has 8 divisors (see below), whose sum is σ = 140200079040. Its totient is φ = 102813390240.

The previous prime is 121312012181. The next prime is 121312012219. The reversal of 121312012213 is 312210213121.

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 121312012213 - 2⁵ = 121312012181 is a prime.

It is a super-2 number, since 2×121312012213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312012219) 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, 97360543 + ... + 97361788.

It is an arithmetic number, because the mean of its divisors is an integer number (17525009880).

Almost surely, 2^121312012213 is an apocalyptic number.

It is an amenable number.

121312012213 is a deficient number, since it is larger than the sum of its proper divisors (18888066827).

121312012213 is an equidigital number, since it uses as much as digits as its factorization.

121312012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194722427.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121312012213 its reverse (312210213121), we get a palindrome (433522225334).

The spelling of 121312012213 in words is "one hundred twenty-one billion, three hundred twelve million, twelve thousand, two hundred thirteen".