221130213 has 8 divisors (see below), whose sum is σ = 298879488. Its totient is φ = 145400544.

The previous prime is 221130199. The next prime is 221130229. The reversal of 221130213 is 312031122.

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

It is not a de Polignac number, because 221130213 - 2⁶ = 221130149 is a prime.

It is a super-2 number, since 2×221130213² = 97797142202850738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221130192 and 221130201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130263) 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, 504645 + ... + 505082.

It is an arithmetic number, because the mean of its divisors is an integer number (37359936).

Almost surely, 2^221130213 is an apocalyptic number.

It is an amenable number.

221130213 is a deficient number, since it is larger than the sum of its proper divisors (77749275).

221130213 is a wasteful number, since it uses less digits than its factorization.

221130213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009803.

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

The square root of 221130213 is about 14870.4476395299. The cubic root of 221130213 is about 604.7130784378.

Adding to 221130213 its reverse (312031122), we get a palindrome (533161335).

Subtracting 221130213 from its reverse (312031122), we obtain a palindrome (90900909).

The spelling of 221130213 in words is "two hundred twenty-one million, one hundred thirty thousand, two hundred thirteen".