2111221222207 has 2 divisors, whose sum is σ = 2111221222208. Its totient is φ = 2111221222206.

The previous prime is 2111221222193. The next prime is 2111221222223. The reversal of 2111221222207 is 7022221221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111221222207 - 2⁷ = 2111221222079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111221222507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055610611103 + 1055610611104.

It is an arithmetic number, because the mean of its divisors is an integer number (1055610611104).

Almost surely, 2^{2111221222207} is an apocalyptic number.

2111221222207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111221222207 is an equidigital number, since it uses as much as digits as its factorization.

2111221222207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 2111221222207 its reverse (7022221221112), we get a palindrome (9133442443319).

The spelling of 2111221222207 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred seven".