222036761 has 2 divisors, whose sum is σ = 222036762. Its totient is φ = 222036760.

The previous prime is 222036757. The next prime is 222036799. The reversal of 222036761 is 167630222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214446736 + 7590025 = 14644^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 222036761 - 2² = 222036757 is a prime.

It is a super-2 number, since 2×222036761² = 98600646470742242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222032761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111018380 + 111018381.

It is an arithmetic number, because the mean of its divisors is an integer number (111018381).

Almost surely, 2^222036761 is an apocalyptic number.

It is an amenable number.

222036761 is a deficient number, since it is larger than the sum of its proper divisors (1).

222036761 is an equidigital number, since it uses as much as digits as its factorization.

222036761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 222036761 is about 14900.8979930741. The cubic root of 222036761 is about 605.5383146765.

Adding to 222036761 its reverse (167630222), we get a palindrome (389666983).

The spelling of 222036761 in words is "two hundred twenty-two million, thirty-six thousand, seven hundred sixty-one".