21114444367 has 2 divisors, whose sum is σ = 21114444368. Its totient is φ = 21114444366.

The previous prime is 21114444349. The next prime is 21114444371. The reversal of 21114444367 is 76344441112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21114444367 - 2²³ = 21106055759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114444067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557222183 + 10557222184.

It is an arithmetic number, because the mean of its divisors is an integer number (10557222184).

Almost surely, 2^21114444367 is an apocalyptic number.

21114444367 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114444367 is an equidigital number, since it uses as much as digits as its factorization.

21114444367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 37.

Adding to 21114444367 its reverse (76344441112), we get a palindrome (97458885479).

The spelling of 21114444367 in words is "twenty-one billion, one hundred fourteen million, four hundred forty-four thousand, three hundred sixty-seven".