21103222199 has 2 divisors, whose sum is σ = 21103222200. Its totient is φ = 21103222198.

The previous prime is 21103222171. The next prime is 21103222219. The reversal of 21103222199 is 99122230112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21103222199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21103212199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551611099 + 10551611100.

It is an arithmetic number, because the mean of its divisors is an integer number (10551611100).

Almost surely, 2^21103222199 is an apocalyptic number.

21103222199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103222199 is an equidigital number, since it uses as much as digits as its factorization.

21103222199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 21103222199 in words is "twenty-one billion, one hundred three million, two hundred twenty-two thousand, one hundred ninety-nine".