221223322109 has 2 divisors, whose sum is σ = 221223322110. Its totient is φ = 221223322108.

The previous prime is 221223322097. The next prime is 221223322141. The reversal of 221223322109 is 901223322122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218677816900 + 2545505209 = 467630^2 + 50453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221223322109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221223322909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611661054 + 110611661055.

It is an arithmetic number, because the mean of its divisors is an integer number (110611661055).

Almost surely, 2^221223322109 is an apocalyptic number.

It is an amenable number.

221223322109 is a deficient number, since it is larger than the sum of its proper divisors (1).

221223322109 is an equidigital number, since it uses as much as digits as its factorization.

221223322109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 221223322109 in words is "two hundred twenty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, one hundred nine".