13021019 has 4 divisors (see below), whose sum is σ = 14204760. Its totient is φ = 11837280.

The previous prime is 13021009. The next prime is 13021027. The reversal of 13021019 is 91012031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13021019 - 2¹² = 13016923 is a prime.

It is a super-2 number, since 2×13021019² = 339093871596722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13020988 and 13021006.

It is not an unprimeable number, because it can be changed into a prime (13021009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591854 + ... + 591875.

It is an arithmetic number, because the mean of its divisors is an integer number (3551190).

Almost surely, 2^13021019 is an apocalyptic number.

13021019 is a deficient number, since it is larger than the sum of its proper divisors (1183741).

13021019 is a wasteful number, since it uses less digits than its factorization.

13021019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183740.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 13021019 is about 3608.4649090714. The cubic root of 13021019 is about 235.2601254167.

The spelling of 13021019 in words is "thirteen million, twenty-one thousand, nineteen".