13012201133021 has 4 divisors (see below), whose sum is σ = 13034144137212. Its totient is φ = 12990258128832.

The previous prime is 13012201132999. The next prime is 13012201133077. The reversal of 13012201133021 is 12033110221031.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6709395062500 + 6302806070521 = 2590250^2 + 2510539^2 .

It is a cyclic number.

It is not a de Polignac number, because 13012201133021 - 2²² = 13012196938717 is a prime.

It is a super-2 number, since 2×13012201133021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13012201132984 and 13012201133002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012201133081) 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, 10971501206 + ... + 10971502391.

It is an arithmetic number, because the mean of its divisors is an integer number (3258536034303).

Almost surely, 2^{13012201133021} is an apocalyptic number.

It is an amenable number.

13012201133021 is a deficient number, since it is larger than the sum of its proper divisors (21943004191).

13012201133021 is an equidigital number, since it uses as much as digits as its factorization.

13012201133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21943004190.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13012201133021 its reverse (12033110221031), we get a palindrome (25045311354052).

The spelling of 13012201133021 in words is "thirteen trillion, twelve billion, two hundred one million, one hundred thirty-three thousand, twenty-one".