113555002211221 has 8 divisors (see below), whose sum is σ = 113662898992280. Its totient is φ = 113447108556288.

The previous prime is 113555002211219. The next prime is 113555002211297. The reversal of 113555002211221 is 122112200555311.

It can be written as a sum of positive squares in 4 ways, for example, as 39478426310596 + 74076575900625 = 6283186^2 + 8606775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113555002211221 - 2¹ = 113555002211219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113555002211201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75428365 + ... + 76919101.

It is an arithmetic number, because the mean of its divisors is an integer number (14207862374035).

Almost surely, 2^{113555002211221} is an apocalyptic number.

It is an amenable number.

113555002211221 is a deficient number, since it is larger than the sum of its proper divisors (107896781059).

113555002211221 is a wasteful number, since it uses less digits than its factorization.

113555002211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563063.

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 113555002211221 its reverse (122112200555311), we get a palindrome (235667202766532).

The spelling of 113555002211221 in words is "one hundred thirteen trillion, five hundred fifty-five billion, two million, two hundred eleven thousand, two hundred twenty-one".