21022222027 has 2 divisors, whose sum is σ = 21022222028. Its totient is φ = 21022222026.

The previous prime is 21022222021. The next prime is 21022222033. The reversal of 21022222027 is 72022222012.

It is a balanced prime because it is at equal distance from previous prime (21022222021) and next prime (21022222033).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022222027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21022221989 and 21022222007.

It is not a weakly prime, because it can be changed into another prime (21022222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511111013 + 10511111014.

It is an arithmetic number, because the mean of its divisors is an integer number (10511111014).

Almost surely, 2^21022222027 is an apocalyptic number.

21022222027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022222027 is an equidigital number, since it uses as much as digits as its factorization.

21022222027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 21022222027 its reverse (72022222012), we get a palindrome (93044444039).

It can be divided in two parts, 21022 and 222027, that added together give a square (243049 = 493²).

The spelling of 21022222027 in words is "twenty-one billion, twenty-two million, two hundred twenty-two thousand, twenty-seven".