222545013 has 4 divisors (see below), whose sum is σ = 296726688. Its totient is φ = 148363340.

The previous prime is 222545003. The next prime is 222545051. The reversal of 222545013 is 310545222.

222545013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 222545013 - 2⁴ = 222544997 is a prime.

It is a super-2 number, since 2×222545013² = 99052565622340338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222545003) 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, 37090833 + ... + 37090838.

It is an arithmetic number, because the mean of its divisors is an integer number (74181672).

Almost surely, 2^222545013 is an apocalyptic number.

It is an amenable number.

222545013 is a deficient number, since it is larger than the sum of its proper divisors (74181675).

222545013 is an equidigital number, since it uses as much as digits as its factorization.

222545013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74181674.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 222545013 is about 14917.9426530604. The cubic root of 222545013 is about 605.9999972770. Note that the first 5 decimals are identical.

The spelling of 222545013 in words is "two hundred twenty-two million, five hundred forty-five thousand, thirteen".