2123212207 has 2 divisors, whose sum is σ = 2123212208. Its totient is φ = 2123212206.

The previous prime is 2123212123. The next prime is 2123212211. The reversal of 2123212207 is 7022123212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123212207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123219207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061606103 + 1061606104.

It is an arithmetic number, because the mean of its divisors is an integer number (1061606104).

Almost surely, 2^2123212207 is an apocalyptic number.

2123212207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123212207 is an equidigital number, since it uses as much as digits as its factorization.

2123212207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2123212207 is about 46078.3268684964. The cubic root of 2123212207 is about 1285.2801514873.

Adding to 2123212207 its reverse (7022123212), we get a palindrome (9145335419).

The spelling of 2123212207 in words is "two billion, one hundred twenty-three million, two hundred twelve thousand, two hundred seven".