113440021221021 has 8 divisors (see below), whose sum is σ = 165003667230624. Its totient is φ = 68751528012720.

The previous prime is 113440021220969. The next prime is 113440021221101. The reversal of 113440021221021 is 120122120044311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113440021221021 - 2⁹ = 113440021220509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113440021220982 and 113440021221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113440021228021) 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, 1718788200286 + ... + 1718788200351.

It is an arithmetic number, because the mean of its divisors is an integer number (20625458403828).

Almost surely, 2^{113440021221021} is an apocalyptic number.

113440021221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113440021221021 is a deficient number, since it is larger than the sum of its proper divisors (51563646009603).

113440021221021 is a wasteful number, since it uses less digits than its factorization.

113440021221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437576400651.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 113440021221021 its reverse (120122120044311), we get a palindrome (233562141265332).

The spelling of 113440021221021 in words is "one hundred thirteen trillion, four hundred forty billion, twenty-one million, two hundred twenty-one thousand, twenty-one".