220222212809 has 2 divisors, whose sum is σ = 220222212810. Its totient is φ = 220222212808.

The previous prime is 220222212779. The next prime is 220222212851. The reversal of 220222212809 is 908212222022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220167408400 + 54804409 = 469220^2 + 7403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220222212809 is a prime.

It is not a weakly prime, because it can be changed into another prime (220222212709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110111106404 + 110111106405.

It is an arithmetic number, because the mean of its divisors is an integer number (110111106405).

Almost surely, 2^220222212809 is an apocalyptic number.

It is an amenable number.

220222212809 is a deficient number, since it is larger than the sum of its proper divisors (1).

220222212809 is an equidigital number, since it uses as much as digits as its factorization.

220222212809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 220222212809 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred twelve thousand, eight hundred nine".