221220002207 has 2 divisors, whose sum is σ = 221220002208. Its totient is φ = 221220002206.

The previous prime is 221220002167. The next prime is 221220002249. The reversal of 221220002207 is 702200022122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221220002207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221220002257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610001103 + 110610001104.

It is an arithmetic number, because the mean of its divisors is an integer number (110610001104).

Almost surely, 2^221220002207 is an apocalyptic number.

221220002207 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220002207 is an equidigital number, since it uses as much as digits as its factorization.

221220002207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

Adding to 221220002207 its reverse (702200022122), we get a palindrome (923420024329).

The spelling of 221220002207 in words is "two hundred twenty-one billion, two hundred twenty million, two thousand, two hundred seven".