92228221 has 2 divisors, whose sum is σ = 92228222. Its totient is φ = 92228220.

The previous prime is 92228197. The next prime is 92228231. The reversal of 92228221 is 12282229.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 40819321 = 7170^2 + 6389^2 .

It is a cyclic number.

It is not a de Polignac number, because 92228221 - 2⁷ = 92228093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 92228221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (92228231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46114110 + 46114111.

It is an arithmetic number, because the mean of its divisors is an integer number (46114111).

Almost surely, 2^92228221 is an apocalyptic number.

It is an amenable number.

92228221 is a deficient number, since it is larger than the sum of its proper divisors (1).

92228221 is an equidigital number, since it uses as much as digits as its factorization.

92228221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 92228221 is about 9603.5525197710. The cubic root of 92228221 is about 451.8087219611.

The spelling of 92228221 in words is "ninety-two million, two hundred twenty-eight thousand, two hundred twenty-one".