12221012210999 has 2 divisors, whose sum is σ = 12221012211000. Its totient is φ = 12221012210998.

The previous prime is 12221012210993. The next prime is 12221012211041. The reversal of 12221012210999 is 99901221012221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12221012210999 - 2⁴ = 12221012210983 is a prime.

It is a super-2 number, since 2×12221012210999² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221012210993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110506105499 + 6110506105500.

It is an arithmetic number, because the mean of its divisors is an integer number (6110506105500).

Almost surely, 2^{12221012210999} is an apocalyptic number.

12221012210999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221012210999 is an equidigital number, since it uses as much as digits as its factorization.

12221012210999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 12221012210999 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two hundred ten thousand, nine hundred ninety-nine".