22111212089 has 2 divisors, whose sum is σ = 22111212090. Its totient is φ = 22111212088.

The previous prime is 22111212073. The next prime is 22111212103. The reversal of 22111212089 is 98021211122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12446749225 + 9664462864 = 111565^2 + 98308^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111212089 - 2⁴ = 22111212073 is a prime.

It is not a weakly prime, because it can be changed into another prime (22111212289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055606044 + 11055606045.

It is an arithmetic number, because the mean of its divisors is an integer number (11055606045).

Almost surely, 2^22111212089 is an apocalyptic number.

It is an amenable number.

22111212089 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111212089 is an equidigital number, since it uses as much as digits as its factorization.

22111212089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

It can be divided in two parts, 22 and 111212089, that added together give a palindrome (111212111).

The spelling of 22111212089 in words is "twenty-two billion, one hundred eleven million, two hundred twelve thousand, eighty-nine".