113203221 has 8 divisors (see below), whose sum is σ = 159816384. Its totient is φ = 71029440.

The previous prime is 113203199. The next prime is 113203231. The reversal of 113203221 is 122302311.

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

It is not a de Polignac number, because 113203221 - 2⁶ = 113203157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113203221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113203231) 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, 1109785 + ... + 1109886.

It is an arithmetic number, because the mean of its divisors is an integer number (19977048).

Almost surely, 2^113203221 is an apocalyptic number.

It is an amenable number.

113203221 is a deficient number, since it is larger than the sum of its proper divisors (46613163).

113203221 is a wasteful number, since it uses less digits than its factorization.

113203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219691.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 113203221 is about 10639.7002307396. The cubic root of 113203221 is about 483.7484591555.

Adding to 113203221 its reverse (122302311), we get a palindrome (235505532).

It can be divided in two parts, 11320 and 3221, that added together give a palindrome (14541).

The spelling of 113203221 in words is "one hundred thirteen million, two hundred three thousand, two hundred twenty-one".