13013212121 has 8 divisors (see below), whose sum is σ = 16016261184. Its totient is φ = 10296167760.

The previous prime is 13013212073. The next prime is 13013212181. The reversal of 13013212121 is 12121231031.

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 13013212121 - 2³⁰ = 11939470297 is a prime.

It is a super-2 number, since 2×13013212121² (a number of 21 digits) contains 22 as substring.

13013212121 is a modest number, since divided by 212121 gives 13013 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 13013212121.

It is not an unprimeable number, because it can be changed into a prime (13013212181) 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, 71501075 + ... + 71501256.

It is an arithmetic number, because the mean of its divisors is an integer number (2002032648).

Almost surely, 2^13013212121 is an apocalyptic number.

It is an amenable number.

13013212121 is a deficient number, since it is larger than the sum of its proper divisors (3003049063).

13013212121 is a wasteful number, since it uses less digits than its factorization.

13013212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143002351.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13013212121 its reverse (12121231031), we get a palindrome (25134443152).

The spelling of 13013212121 in words is "thirteen billion, thirteen million, two hundred twelve thousand, one hundred twenty-one".