121393516413 has 16 divisors (see below), whose sum is σ = 179019685376. Its totient is φ = 72684682560.

The previous prime is 121393516397. The next prime is 121393516469. The reversal of 121393516413 is 314615393121.

It is a happy number.

It is not a de Polignac number, because 121393516413 - 2⁴ = 121393516397 is a prime.

It is a super-2 number, since 2×121393516413² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121393516913) 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, 42061453 + ... + 42064338.

It is an arithmetic number, because the mean of its divisors is an integer number (11188730336).

Almost surely, 2^121393516413 is an apocalyptic number.

121393516413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121393516413 is a deficient number, since it is larger than the sum of its proper divisors (57626168963).

121393516413 is a wasteful number, since it uses less digits than its factorization.

121393516413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84125844.

The product of its digits is 58320, while the sum is 39.

The spelling of 121393516413 in words is "one hundred twenty-one billion, three hundred ninety-three million, five hundred sixteen thousand, four hundred thirteen".