222306261 has 8 divisors (see below), whose sum is σ = 298742784. Its totient is φ = 147036960.

The previous prime is 222306233. The next prime is 222306269. The reversal of 222306261 is 162603222.

222306261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 222306261 - 2⁹ = 222305749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222306269) 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, 291360 + ... + 292121.

It is an arithmetic number, because the mean of its divisors is an integer number (37342848).

Almost surely, 2^222306261 is an apocalyptic number.

It is an amenable number.

222306261 is a deficient number, since it is larger than the sum of its proper divisors (76436523).

222306261 is a wasteful number, since it uses less digits than its factorization.

222306261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583611.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 222306261 is about 14909.9383298523. The cubic root of 222306261 is about 605.7832089512.

Adding to 222306261 its reverse (162603222), we get a palindrome (384909483).

The spelling of 222306261 in words is "two hundred twenty-two million, three hundred six thousand, two hundred sixty-one".