222220429 has 2 divisors, whose sum is σ = 222220430. Its totient is φ = 222220428.

The previous prime is 222220357. The next prime is 222220433. The reversal of 222220429 is 924022222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127644804 + 94575625 = 11298^2 + 9725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222220429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222220459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110214 + 111110215.

It is an arithmetic number, because the mean of its divisors is an integer number (111110215).

Almost surely, 2^222220429 is an apocalyptic number.

It is an amenable number.

222220429 is a deficient number, since it is larger than the sum of its proper divisors (1).

222220429 is an equidigital number, since it uses as much as digits as its factorization.

222220429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 222220429 is about 14907.0597033754. The cubic root of 222220429 is about 605.7052350225.

The spelling of 222220429 in words is "two hundred twenty-two million, two hundred twenty thousand, four hundred twenty-nine".