222205761 has 16 divisors (see below), whose sum is σ = 333261120. Its totient is φ = 148135716.

The previous prime is 222205751. The next prime is 222205769. The reversal of 222205761 is 167502222.

It is a de Polignac number, because none of the positive numbers 2^k-222205761 is a prime.

It is a super-3 number, since 3×222205761³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (222205769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48615 + ... + 52988.

It is an arithmetic number, because the mean of its divisors is an integer number (20828820).

Almost surely, 2^222205761 is an apocalyptic number.

It is an amenable number.

222205761 is a deficient number, since it is larger than the sum of its proper divisors (111055359).

222205761 is an frugal number, since it uses more digits than its factorization.

222205761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101624 (or 101606 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 222205761 is about 14906.5677135952. The cubic root of 222205761 is about 605.6919078951.

Adding to 222205761 its reverse (167502222), we get a palindrome (389707983).

The spelling of 222205761 in words is "two hundred twenty-two million, two hundred five thousand, seven hundred sixty-one".