121323020313 has 32 divisors (see below), whose sum is σ = 181944984960. Its totient is φ = 71263272960.

The previous prime is 121323020293. The next prime is 121323020333. The reversal of 121323020313 is 313020323121.

It is an interprime number because it is at equal distance from previous prime (121323020293) and next prime (121323020333).

It is not a de Polignac number, because 121323020313 - 2⁵ = 121323020281 is a prime.

It is a super-2 number, since 2×121323020313² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121323020313.

It is not an unprimeable number, because it can be changed into a prime (121323020333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120483 + ... + 507111.

It is an arithmetic number, because the mean of its divisors is an integer number (5685780780).

Almost surely, 2^121323020313 is an apocalyptic number.

It is an amenable number.

121323020313 is a deficient number, since it is larger than the sum of its proper divisors (60621964647).

121323020313 is a wasteful number, since it uses less digits than its factorization.

121323020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386937.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 121323020313 its reverse (313020323121), we get a palindrome (434343343434).

The spelling of 121323020313 in words is "one hundred twenty-one billion, three hundred twenty-three million, twenty thousand, three hundred thirteen".