113122221 has 8 divisors (see below), whose sum is σ = 150972000. Its totient is φ = 75343632.

The previous prime is 113122171. The next prime is 113122253. The reversal of 113122221 is 122221311.

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

It is not a de Polignac number, because 113122221 - 2¹⁵ = 113089453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113122291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13971 + ... + 20528.

It is an arithmetic number, because the mean of its divisors is an integer number (18871500).

Almost surely, 2^113122221 is an apocalyptic number.

It is an amenable number.

113122221 is a deficient number, since it is larger than the sum of its proper divisors (37849779).

113122221 is a wasteful number, since it uses less digits than its factorization.

113122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35595.

The product of its digits is 48, while the sum is 15.

The square root of 113122221 is about 10635.8930513615. The cubic root of 113122221 is about 483.6330532091.

Adding to 113122221 its reverse (122221311), we get a palindrome (235343532).

The spelling of 113122221 in words is "one hundred thirteen million, one hundred twenty-two thousand, two hundred twenty-one".