23211229 has 2 divisors, whose sum is σ = 23211230. Its totient is φ = 23211228.

The previous prime is 23211169. The next prime is 23211233. The reversal of 23211229 is 92211232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22752900 + 458329 = 4770^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211229 - 2⁷ = 23211101 is a prime.

It is a super-2 number, since 2×23211229² = 1077522303380882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605614 + 11605615.

It is an arithmetic number, because the mean of its divisors is an integer number (11605615).

Almost surely, 2^23211229 is an apocalyptic number.

It is an amenable number.

23211229 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211229 is an equidigital number, since it uses as much as digits as its factorization.

23211229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 23211229 is about 4817.8033376218. The cubic root of 23211229 is about 285.2546364851.

The spelling of 23211229 in words is "twenty-three million, two hundred eleven thousand, two hundred twenty-nine".