21222110222099 has 2 divisors, whose sum is σ = 21222110222100. Its totient is φ = 21222110222098.

The previous prime is 21222110222083. The next prime is 21222110222113. The reversal of 21222110222099 is 99022201122212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222110222099 - 2⁴ = 21222110222083 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222110222009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611055111049 + 10611055111050.

It is an arithmetic number, because the mean of its divisors is an integer number (10611055111050).

Almost surely, 2^{21222110222099} is an apocalyptic number.

21222110222099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222110222099 is an equidigital number, since it uses as much as digits as its factorization.

21222110222099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 21222110222099 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-two thousand, ninety-nine".