20022229 has 2 divisors, whose sum is σ = 20022230. Its totient is φ = 20022228.

The previous prime is 20022203. The next prime is 20022239. The reversal of 20022229 is 92222002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17766225 + 2256004 = 4215^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022229 - 2¹⁹ = 19497941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011114 + 10011115.

It is an arithmetic number, because the mean of its divisors is an integer number (10011115).

Almost surely, 2^20022229 is an apocalyptic number.

It is an amenable number.

20022229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022229 is an equidigital number, since it uses as much as digits as its factorization.

20022229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20022229 is about 4474.6205425712. The cubic root of 20022229 is about 271.5422890736.

The spelling of 20022229 in words is "twenty million, twenty-two thousand, two hundred twenty-nine".