21122222120099 has 2 divisors, whose sum is σ = 21122222120100. Its totient is φ = 21122222120098.

The previous prime is 21122222120059. The next prime is 21122222120137. The reversal of 21122222120099 is 99002122222112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21122222120099 - 2¹² = 21122222116003 is a prime.

It is a super-2 number, since 2×21122222120099² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21122222120059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561111060049 + 10561111060050.

It is an arithmetic number, because the mean of its divisors is an integer number (10561111060050).

Almost surely, 2^{21122222120099} is an apocalyptic number.

21122222120099 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122222120099 is an equidigital number, since it uses as much as digits as its factorization.

21122222120099 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 21122222120099 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, ninety-nine".