113421205556 has 12 divisors (see below), whose sum is σ = 203851626468. Its totient is φ = 55177883712.

The previous prime is 113421205553. The next prime is 113421205609. The reversal of 113421205556 is 655502124311.

It can be written as a sum of positive squares in 2 ways, for example, as 105449572900 + 7971632656 = 324730^2 + 89284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113421205553) 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, 383179601 + ... + 383179896.

It is an arithmetic number, because the mean of its divisors is an integer number (16987635539).

Almost surely, 2^113421205556 is an apocalyptic number.

It is an amenable number.

113421205556 is a deficient number, since it is larger than the sum of its proper divisors (90430420912).

113421205556 is a wasteful number, since it uses less digits than its factorization.

113421205556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766359538 (or 766359536 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 113421205556 its reverse (655502124311), we get a palindrome (768923329867).

The spelling of 113421205556 in words is "one hundred thirteen billion, four hundred twenty-one million, two hundred five thousand, five hundred fifty-six".