221122219999 has 2 divisors, whose sum is σ = 221122220000. Its totient is φ = 221122219998.

The previous prime is 221122219961. The next prime is 221122220003. The reversal of 221122219999 is 999912221122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221122219999 - 2²⁷ = 220988002271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221122210999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110561109999 + 110561110000.

It is an arithmetic number, because the mean of its divisors is an integer number (110561110000).

Almost surely, 2^221122219999 is an apocalyptic number.

221122219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

221122219999 is an equidigital number, since it uses as much as digits as its factorization.

221122219999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 49.

The spelling of 221122219999 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred nineteen thousand, nine hundred ninety-nine".