121310013 has 32 divisors (see below), whose sum is σ = 183837312. Its totient is φ = 70502400.

The previous prime is 121309997. The next prime is 121310069. The reversal of 121310013 is 310013121.

It is not a de Polignac number, because 121310013 - 2⁴ = 121309997 is a prime.

It is a super-2 number, since 2×121310013² = 29432238508120338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310083) 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, 88453 + ... + 89813.

It is an arithmetic number, because the mean of its divisors is an integer number (5744916).

Almost surely, 2^121310013 is an apocalyptic number.

It is an amenable number.

121310013 is a deficient number, since it is larger than the sum of its proper divisors (62527299).

121310013 is a wasteful number, since it uses less digits than its factorization.

121310013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 121310013 is about 11014.0824856181. The cubic root of 121310013 is about 495.0307949416.

Adding to 121310013 its reverse (310013121), we get a palindrome (431323134).

It can be divided in two parts, 121 and 310013, that multiplied together give a palindrome (37511573).

The spelling of 121310013 in words is "one hundred twenty-one million, three hundred ten thousand, thirteen".