113552454243221 has 4 divisors (see below), whose sum is σ = 129774233420832. Its totient is φ = 97330675065612.

The previous prime is 113552454243197. The next prime is 113552454243223. The reversal of 113552454243221 is 122342454255311.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113552454243221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113552454243223) 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, 8110889588795 + ... + 8110889588808.

It is an arithmetic number, because the mean of its divisors is an integer number (32443558355208).

Almost surely, 2^{113552454243221} is an apocalyptic number.

It is an amenable number.

113552454243221 is a deficient number, since it is larger than the sum of its proper divisors (16221779177611).

113552454243221 is an equidigital number, since it uses as much as digits as its factorization.

113552454243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16221779177610.

The product of its digits is 1152000, while the sum is 44.

The spelling of 113552454243221 in words is "one hundred thirteen trillion, five hundred fifty-two billion, four hundred fifty-four million, two hundred forty-three thousand, two hundred twenty-one".