21113000001023 has 16 divisors (see below), whose sum is σ = 24212581096704. Its totient is φ = 18034386462720.

The previous prime is 21113000000957. The next prime is 21113000001031. The reversal of 21113000001023 is 32010000031112.

It is a cyclic number.

It is not a de Polignac number, because 21113000001023 - 2⁸ = 21113000000767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21113000000989 and 21113000001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113000001073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2153090 + ... + 6845567.

It is an arithmetic number, because the mean of its divisors is an integer number (1513286318544).

Almost surely, 2^{21113000001023} is an apocalyptic number.

21113000001023 is a deficient number, since it is larger than the sum of its proper divisors (3099581095681).

21113000001023 is an equidigital number, since it uses as much as digits as its factorization.

21113000001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8999822.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21113000001023 its reverse (32010000031112), we get a palindrome (53123000032135).

The spelling of 21113000001023 in words is "twenty-one trillion, one hundred thirteen billion, one thousand, twenty-three".