222222029 has 2 divisors, whose sum is σ = 222222030. Its totient is φ = 222222028.

The previous prime is 222221971. The next prime is 222222031. The reversal of 222222029 is 920222222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136936804 + 85285225 = 11702^2 + 9235^2 .

It is a cyclic number.

It is not a de Polignac number, because 222222029 - 2²⁰ = 221173453 is a prime.

Together with 222222031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222221995 and 222222013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222224029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111014 + 111111015.

It is an arithmetic number, because the mean of its divisors is an integer number (111111015).

Almost surely, 2^222222029 is an apocalyptic number.

It is an amenable number.

222222029 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222029 is an equidigital number, since it uses as much as digits as its factorization.

222222029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 222222029 is about 14907.1133691268. The cubic root of 222222029 is about 605.7066887233.

The spelling of 222222029 in words is "two hundred twenty-two million, two hundred twenty-two thousand, twenty-nine".