113220213 has 4 divisors (see below), whose sum is σ = 150960288. Its totient is φ = 75480140.

The previous prime is 113220203. The next prime is 113220223. The reversal of 113220213 is 312022311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312022311 = 3 ⋅104007437.

It is an interprime number because it is at equal distance from previous prime (113220203) and next prime (113220223).

It is a cyclic number.

It is not a de Polignac number, because 113220213 - 2⁴ = 113220197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113220192 and 113220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113220203) 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, 18870033 + ... + 18870038.

It is an arithmetic number, because the mean of its divisors is an integer number (37740072).

Almost surely, 2^113220213 is an apocalyptic number.

It is an amenable number.

113220213 is a deficient number, since it is larger than the sum of its proper divisors (37740075).

113220213 is an equidigital number, since it uses as much as digits as its factorization.

113220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37740074.

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

The square root of 113220213 is about 10640.4987195150. The cubic root of 113220213 is about 483.7726617725.

Adding to 113220213 its reverse (312022311), we get a palindrome (425242524).

The spelling of 113220213 in words is "one hundred thirteen million, two hundred twenty thousand, two hundred thirteen".