12026222921 has 2 divisors, whose sum is σ = 12026222922. Its totient is φ = 12026222920.

The previous prime is 12026222903. The next prime is 12026222927. The reversal of 12026222921 is 12922262021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11307982921 + 718240000 = 106339^2 + 26800^2 .

It is a cyclic number.

It is not a de Polignac number, because 12026222921 - 2¹⁸ = 12025960777 is a prime.

It is not a weakly prime, because it can be changed into another prime (12026222927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6013111460 + 6013111461.

It is an arithmetic number, because the mean of its divisors is an integer number (6013111461).

Almost surely, 2^12026222921 is an apocalyptic number.

It is an amenable number.

12026222921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12026222921 is an equidigital number, since it uses as much as digits as its factorization.

12026222921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 12026222921 its reverse (12922262021), we get a palindrome (24948484942).

The spelling of 12026222921 in words is "twelve billion, twenty-six million, two hundred twenty-two thousand, nine hundred twenty-one".