113443235421251 has 4 divisors (see below), whose sum is σ = 113503609683600. Its totient is φ = 113382861158904.

The previous prime is 113443235421221. The next prime is 113443235421253. The reversal of 113443235421251 is 152124532344311.

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

It is a cyclic number.

It is not a de Polignac number, because 113443235421251 - 2³⁸ = 113168357514307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113443235421199 and 113443235421208.

It is not an unprimeable number, because it can be changed into a prime (113443235421253) 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, 30187128356 + ... + 30187132113.

It is an arithmetic number, because the mean of its divisors is an integer number (28375902420900).

Almost surely, 2^{113443235421251} is an apocalyptic number.

113443235421251 is a deficient number, since it is larger than the sum of its proper divisors (60374262349).

113443235421251 is an equidigital number, since it uses as much as digits as its factorization.

113443235421251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60374262348.

The product of its digits is 345600, while the sum is 41.

Adding to 113443235421251 its reverse (152124532344311), we get a palindrome (265567767765562).

The spelling of 113443235421251 in words is "one hundred thirteen trillion, four hundred forty-three billion, two hundred thirty-five million, four hundred twenty-one thousand, two hundred fifty-one".