221220222202907 has 2 divisors, whose sum is σ = 221220222202908. Its totient is φ = 221220222202906.

The previous prime is 221220222202901. The next prime is 221220222203021. The reversal of 221220222202907 is 709202222022122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221220222202907 - 2⁴ = 221220222202891 is a prime.

It is not a weakly prime, because it can be changed into another prime (221220222202901) 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, 110610111101453 + 110610111101454.

It is an arithmetic number, because the mean of its divisors is an integer number (110610111101454).

Almost surely, 2^{221220222202907} is an apocalyptic number.

221220222202907 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220222202907 is an equidigital number, since it uses as much as digits as its factorization.

221220222202907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 221220222202907 in words is "two hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred two thousand, nine hundred seven".