222121022309 has 2 divisors, whose sum is σ = 222121022310. Its totient is φ = 222121022308.

The previous prime is 222121022297. The next prime is 222121022377. The reversal of 222121022309 is 903220121222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117741628225 + 104379394084 = 343135^2 + 323078^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121022309 - 2¹² = 222121018213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121022209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060511154 + 111060511155.

It is an arithmetic number, because the mean of its divisors is an integer number (111060511155).

Almost surely, 2^222121022309 is an apocalyptic number.

It is an amenable number.

222121022309 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121022309 is an equidigital number, since it uses as much as digits as its factorization.

222121022309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 222121022309 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty-two thousand, three hundred nine".