21222201199 has 2 divisors, whose sum is σ = 21222201200. Its totient is φ = 21222201198.

The previous prime is 21222201181. The next prime is 21222201233. The reversal of 21222201199 is 99110222212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222201199 - 2⁵ = 21222201167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222201199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222201149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611100599 + 10611100600.

It is an arithmetic number, because the mean of its divisors is an integer number (10611100600).

Almost surely, 2^21222201199 is an apocalyptic number.

21222201199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222201199 is an equidigital number, since it uses as much as digits as its factorization.

21222201199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 21222201199 in words is "twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred ninety-nine".