21220222220089 has 2 divisors, whose sum is σ = 21220222220090. Its totient is φ = 21220222220088.

The previous prime is 21220222219997. The next prime is 21220222220107. The reversal of 21220222220089 is 98002222202212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18485141319225 + 2735080900864 = 4299435^2 + 1653808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21220222220089 is a prime.

It is not a weakly prime, because it can be changed into another prime (21220222220489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610111110044 + 10610111110045.

It is an arithmetic number, because the mean of its divisors is an integer number (10610111110045).

Almost surely, 2^{21220222220089} is an apocalyptic number.

It is an amenable number.

21220222220089 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220222220089 is an equidigital number, since it uses as much as digits as its factorization.

21220222220089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 21220222220089 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, eighty-nine".