21442333127 has 2 divisors, whose sum is σ = 21442333128. Its totient is φ = 21442333126.

The previous prime is 21442333117. The next prime is 21442333153. The reversal of 21442333127 is 72133324412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21442333127 - 2¹⁶ = 21442267591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21442333093 and 21442333102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21442333117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10721166563 + 10721166564.

It is an arithmetic number, because the mean of its divisors is an integer number (10721166564).

Almost surely, 2^21442333127 is an apocalyptic number.

21442333127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442333127 is an equidigital number, since it uses as much as digits as its factorization.

21442333127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

Adding to 21442333127 its reverse (72133324412), we get a palindrome (93575657539).

The spelling of 21442333127 in words is "twenty-one billion, four hundred forty-two million, three hundred thirty-three thousand, one hundred twenty-seven".