1222021099589 has 2 divisors, whose sum is σ = 1222021099590. Its totient is φ = 1222021099588.

The previous prime is 1222021099583. The next prime is 1222021099597. The reversal of 1222021099589 is 9859901202221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1169663880100 + 52357219489 = 1081510^2 + 228817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222021099589 - 2⁴ = 1222021099573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222021099583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611010549794 + 611010549795.

It is an arithmetic number, because the mean of its divisors is an integer number (611010549795).

Almost surely, 2^{1222021099589} is an apocalyptic number.

It is an amenable number.

1222021099589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222021099589 is an equidigital number, since it uses as much as digits as its factorization.

1222021099589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 1222021099589 in words is "one trillion, two hundred twenty-two billion, twenty-one million, ninety-nine thousand, five hundred eighty-nine".