1222221100189 has 2 divisors, whose sum is σ = 1222221100190. Its totient is φ = 1222221100188.

The previous prime is 1222221100171. The next prime is 1222221100207. The reversal of 1222221100189 is 9810011222221.

It is a balanced prime because it is at equal distance from previous prime (1222221100171) and next prime (1222221100207).

It can be written as a sum of positive squares in only one way, i.e., 1133196443289 + 89024656900 = 1064517^2 + 298370^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222221100189 - 2⁵ = 1222221100157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222221100189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222221100589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611110550094 + 611110550095.

It is an arithmetic number, because the mean of its divisors is an integer number (611110550095).

Almost surely, 2^{1222221100189} is an apocalyptic number.

It is an amenable number.

1222221100189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222221100189 is an equidigital number, since it uses as much as digits as its factorization.

1222221100189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 1222221100189 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, one hundred eighty-nine".