21030111202023 has 24 divisors (see below), whose sum is σ = 37872408053376. Its totient is φ = 10924733091600.

The previous prime is 21030111202007. The next prime is 21030111202147. The reversal of 21030111202023 is 32020211103012.

21030111202023 is a `hidden beast` number, since 210 + 301 + 112 + 0 + 20 + 23 = 666.

It is not a de Polignac number, because 21030111202023 - 2⁴ = 21030111202007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21030111201987 and 21030111202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030111202223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15173239713 + ... + 15173241098.

It is an arithmetic number, because the mean of its divisors is an integer number (1578017002224).

Almost surely, 2^{21030111202023} is an apocalyptic number.

21030111202023 is a deficient number, since it is larger than the sum of its proper divisors (16842296851353).

21030111202023 is a wasteful number, since it uses less digits than its factorization.

21030111202023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30346480835 (or 30346480832 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21030111202023 its reverse (32020211103012), we get a palindrome (53050322305035).

The spelling of 21030111202023 in words is "twenty-one trillion, thirty billion, one hundred eleven million, two hundred two thousand, twenty-three".