221232322229 has 2 divisors, whose sum is σ = 221232322230. Its totient is φ = 221232322228.

The previous prime is 221232322183. The next prime is 221232322247. The reversal of 221232322229 is 922223232122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203789044900 + 17443277329 = 451430^2 + 132073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221232322229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221232322195 and 221232322204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221232322249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616161114 + 110616161115.

It is an arithmetic number, because the mean of its divisors is an integer number (110616161115).

Almost surely, 2^221232322229 is an apocalyptic number.

It is an amenable number.

221232322229 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232322229 is an equidigital number, since it uses as much as digits as its factorization.

221232322229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The spelling of 221232322229 in words is "two hundred twenty-one billion, two hundred thirty-two million, three hundred twenty-two thousand, two hundred twenty-nine".