13012013021 has 8 divisors (see below), whose sum is σ = 14872343424. Its totient is φ = 11152050480.

The previous prime is 13012012967. The next prime is 13012013051. The reversal of 13012013021 is 12031021031.

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 13012013021 - 2⁶ = 13012012957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13012012987 and 13012013005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012013051) 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, 11465 + ... + 161726.

It is an arithmetic number, because the mean of its divisors is an integer number (1859042928).

Almost surely, 2^13012013021 is an apocalyptic number.

It is an amenable number.

13012013021 is a deficient number, since it is larger than the sum of its proper divisors (1860330403).

13012013021 is a wasteful number, since it uses less digits than its factorization.

13012013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183931.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13012013021 its reverse (12031021031), we get a palindrome (25043034052).

The spelling of 13012013021 in words is "thirteen billion, twelve million, thirteen thousand, twenty-one".