121352013 has 12 divisors (see below), whose sum is σ = 181778688. Its totient is φ = 80901180.

The previous prime is 121352003. The next prime is 121352039. The reversal of 121352013 is 310253121.

It is not a de Polignac number, because 121352013 - 2⁸ = 121351757 is a prime.

It is a super-3 number, since 3×121352013³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121352003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249453 + ... + 249938.

It is an arithmetic number, because the mean of its divisors is an integer number (15148224).

Almost surely, 2^121352013 is an apocalyptic number.

It is an amenable number.

121352013 is a deficient number, since it is larger than the sum of its proper divisors (60426675).

121352013 is an frugal number, since it uses more digits than its factorization.

121352013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499406 (or 499394 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 121352013 is about 11015.9889705827. The cubic root of 121352013 is about 495.0879182680.

The spelling of 121352013 in words is "one hundred twenty-one million, three hundred fifty-two thousand, thirteen".