20001222211099 has 2 divisors, whose sum is σ = 20001222211100. Its totient is φ = 20001222211098.

The previous prime is 20001222211049. The next prime is 20001222211123. The reversal of 20001222211099 is 99011222210002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001222211099 - 2²⁹ = 20000685340187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20001222211099.

It is not a weakly prime, because it can be changed into another prime (20001222211039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000611105549 + 10000611105550.

It is an arithmetic number, because the mean of its divisors is an integer number (10000611105550).

Almost surely, 2^{20001222211099} is an apocalyptic number.

20001222211099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001222211099 is an equidigital number, since it uses as much as digits as its factorization.

20001222211099 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 20001222211099 in words is "twenty trillion, one billion, two hundred twenty-two million, two hundred eleven thousand, ninety-nine".