221222020099 has 2 divisors, whose sum is σ = 221222020100. Its totient is φ = 221222020098.

The previous prime is 221222020091. The next prime is 221222020111. The reversal of 221222020099 is 990020222122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221222020099 - 2³ = 221222020091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221222020099.

It is not a weakly prime, because it can be changed into another prime (221222020091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611010049 + 110611010050.

It is an arithmetic number, because the mean of its divisors is an integer number (110611010050).

Almost surely, 2^221222020099 is an apocalyptic number.

221222020099 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222020099 is an equidigital number, since it uses as much as digits as its factorization.

221222020099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 221222020099 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty thousand, ninety-nine".