21222120122099 has 16 divisors (see below), whose sum is σ = 23311338749664. Its totient is φ = 19200420748800.

The previous prime is 21222120122083. The next prime is 21222120122129. The reversal of 21222120122099 is 99022102122212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21222120122099 - 2⁴ = 21222120122083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222120122059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47057942 + ... + 47506779.

It is an arithmetic number, because the mean of its divisors is an integer number (1456958671854).

Almost surely, 2^{21222120122099} is an apocalyptic number.

21222120122099 is a deficient number, since it is larger than the sum of its proper divisors (2089218627565).

21222120122099 is a wasteful number, since it uses less digits than its factorization.

21222120122099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94565078.

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

The spelling of 21222120122099 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, one hundred twenty-two thousand, ninety-nine".