222077561 has 2 divisors, whose sum is σ = 222077562. Its totient is φ = 222077560.

The previous prime is 222077551. The next prime is 222077617. The reversal of 222077561 is 165770222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132963961 + 89113600 = 11531^2 + 9440^2 .

It is a cyclic number.

It is not a de Polignac number, because 222077561 - 2¹⁰ = 222076537 is a prime.

It is not a weakly prime, because it can be changed into another prime (222077551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111038780 + 111038781.

It is an arithmetic number, because the mean of its divisors is an integer number (111038781).

Almost surely, 2^222077561 is an apocalyptic number.

It is an amenable number.

222077561 is a deficient number, since it is larger than the sum of its proper divisors (1).

222077561 is an equidigital number, since it uses as much as digits as its factorization.

222077561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 222077561 is about 14902.2669751954. The cubic root of 222077561 is about 605.5754023041.

The spelling of 222077561 in words is "two hundred twenty-two million, seventy-seven thousand, five hundred sixty-one".