221212022201999 has 2 divisors, whose sum is σ = 221212022202000. Its totient is φ = 221212022201998.

The previous prime is 221212022201983. The next prime is 221212022202001. The reversal of 221212022201999 is 999102220212122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221212022201999 - 2⁴ = 221212022201983 is a prime.

Together with 221212022202001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221212022206999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110606011100999 + 110606011101000.

It is an arithmetic number, because the mean of its divisors is an integer number (110606011101000).

Almost surely, 2^{221212022201999} is an apocalyptic number.

221212022201999 is a deficient number, since it is larger than the sum of its proper divisors (1).

221212022201999 is an equidigital number, since it uses as much as digits as its factorization.

221212022201999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 221212022201999 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty-two million, two hundred one thousand, nine hundred ninety-nine".