113144113021 has 4 divisors (see below), whose sum is σ = 113145480000. Its totient is φ = 113142746044.

The previous prime is 113144113001. The next prime is 113144113067. The reversal of 113144113021 is 120311441311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120311441311 = 137 ⋅878185703.

It is a cyclic number.

It is not a de Polignac number, because 113144113021 - 2¹¹ = 113144110973 is a prime.

It is a super-2 number, since 2×113144113021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113144112983 and 113144113001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113144113001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550741 + ... + 727738.

It is an arithmetic number, because the mean of its divisors is an integer number (28286370000).

Almost surely, 2^113144113021 is an apocalyptic number.

It is an amenable number.

113144113021 is a deficient number, since it is larger than the sum of its proper divisors (1366979).

113144113021 is an equidigital number, since it uses as much as digits as its factorization.

113144113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366978.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 113144113021 its reverse (120311441311), we get a palindrome (233455554332).

The spelling of 113144113021 in words is "one hundred thirteen billion, one hundred forty-four million, one hundred thirteen thousand, twenty-one".