113144221305 has 16 divisors (see below), whose sum is σ = 201145282560. Its totient is φ = 60343584624.

The previous prime is 113144221297. The next prime is 113144221313. The reversal of 113144221305 is 503122441311.

113144221305 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 442 + 213 + 0 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (113144221297) and next prime (113144221313).

It is not a de Polignac number, because 113144221305 - 2³ = 113144221297 is a prime.

It is a super-2 number, since 2×113144221305² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419052537 + ... + 419052806.

It is an arithmetic number, because the mean of its divisors is an integer number (12571580160).

Almost surely, 2^113144221305 is an apocalyptic number.

113144221305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113144221305 is a deficient number, since it is larger than the sum of its proper divisors (88001061255).

113144221305 is an equidigital number, since it uses as much as digits as its factorization.

113144221305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838105357 (or 838105351 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 113144221305 its reverse (503122441311), we get a palindrome (616266662616).

The spelling of 113144221305 in words is "one hundred thirteen billion, one hundred forty-four million, two hundred twenty-one thousand, three hundred five".