10113044221421 has 4 divisors (see below), whose sum is σ = 10114642117500. Its totient is φ = 10111446325344.

The previous prime is 10113044221391. The next prime is 10113044221433. The reversal of 10113044221421 is 12412244031101.

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 3810358656196 + 6302685565225 = 1952014^2 + 2510515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10113044221421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10113044221471) 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, 798938546 + ... + 798951203.

It is an arithmetic number, because the mean of its divisors is an integer number (2528660529375).

Almost surely, 2^{10113044221421} is an apocalyptic number.

It is an amenable number.

10113044221421 is a deficient number, since it is larger than the sum of its proper divisors (1597896079).

10113044221421 is an equidigital number, since it uses as much as digits as its factorization.

10113044221421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597896078.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 10113044221421 its reverse (12412244031101), we get a palindrome (22525288252522).

The spelling of 10113044221421 in words is "ten trillion, one hundred thirteen billion, forty-four million, two hundred twenty-one thousand, four hundred twenty-one".