12220021127 has 2 divisors, whose sum is σ = 12220021128. Its totient is φ = 12220021126.

The previous prime is 12220021111. The next prime is 12220021139. The reversal of 12220021127 is 72112002221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12220021127 - 2⁴ = 12220021111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220021099 and 12220021108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220021727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110010563 + 6110010564.

It is an arithmetic number, because the mean of its divisors is an integer number (6110010564).

Almost surely, 2^12220021127 is an apocalyptic number.

12220021127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220021127 is an equidigital number, since it uses as much as digits as its factorization.

12220021127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 12220021127 its reverse (72112002221), we get a palindrome (84332023348).

The spelling of 12220021127 in words is "twelve billion, two hundred twenty million, twenty-one thousand, one hundred twenty-seven".