13019121 has 12 divisors (see below), whose sum is σ = 19044480. Its totient is φ = 8569080.

The previous prime is 13019113. The next prime is 13019137. The reversal of 13019121 is 12191031.

It is not a de Polignac number, because 13019121 - 2³ = 13019113 is a prime.

It is a super-2 number, since 2×13019121² = 338995023225282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13019094 and 13019103.

It is not an unprimeable number, because it can be changed into a prime (13019021) 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, 8445 + ... + 9866.

It is an arithmetic number, because the mean of its divisors is an integer number (1587040).

Almost surely, 2^13019121 is an apocalyptic number.

It is an amenable number.

13019121 is a deficient number, since it is larger than the sum of its proper divisors (6025359).

13019121 is a wasteful number, since it uses less digits than its factorization.

13019121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18396 (or 18393 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 13019121 is about 3608.2019067674. The cubic root of 13019121 is about 235.2486940171.

The spelling of 13019121 in words is "thirteen million, nineteen thousand, one hundred twenty-one".