21114455023 has 2 divisors, whose sum is σ = 21114455024. Its totient is φ = 21114455022.

The previous prime is 21114455017. The next prime is 21114455041. The reversal of 21114455023 is 32055441112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21114455023 - 2¹³ = 21114446831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21114454982 and 21114455000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21114455003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557227511 + 10557227512.

It is an arithmetic number, because the mean of its divisors is an integer number (10557227512).

Almost surely, 2^21114455023 is an apocalyptic number.

21114455023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114455023 is an equidigital number, since it uses as much as digits as its factorization.

21114455023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 21114455023 its reverse (32055441112), we get a palindrome (53169896135).

The spelling of 21114455023 in words is "twenty-one billion, one hundred fourteen million, four hundred fifty-five thousand, twenty-three".