21042222224027 has 2 divisors, whose sum is σ = 21042222224028. Its totient is φ = 21042222224026.

The previous prime is 21042222224003. The next prime is 21042222224033. The reversal of 21042222224027 is 72042222224012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21042222224027 - 2³⁴ = 21025042354843 is a prime.

It is a super-2 number, since 2×21042222224027² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21042222223984 and 21042222224002.

It is not a weakly prime, because it can be changed into another prime (21042222224087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10521111112013 + 10521111112014.

It is an arithmetic number, because the mean of its divisors is an integer number (10521111112014).

Almost surely, 2^{21042222224027} is an apocalyptic number.

21042222224027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21042222224027 is an equidigital number, since it uses as much as digits as its factorization.

21042222224027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28672, while the sum is 32.

Adding to 21042222224027 its reverse (72042222224012), we get a palindrome (93084444448039).

The spelling of 21042222224027 in words is "twenty-one trillion, forty-two billion, two hundred twenty-two million, two hundred twenty-four thousand, twenty-seven".