21033112023 has 64 divisors (see below), whose sum is σ = 38886912000. Its totient is φ = 10915642080.

The previous prime is 21033111991. The next prime is 21033112031. The reversal of 21033112023 is 32021133012.

21033112023 is a `hidden beast` number, since 210 + 331 + 120 + 2 + 3 = 666.

It is not a de Polignac number, because 21033112023 - 2⁵ = 21033111991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21033111987 and 21033112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033112123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2413528 + ... + 2422226.

It is an arithmetic number, because the mean of its divisors is an integer number (607608000).

Almost surely, 2^21033112023 is an apocalyptic number.

21033112023 is a deficient number, since it is larger than the sum of its proper divisors (17853799977).

21033112023 is a wasteful number, since it uses less digits than its factorization.

21033112023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9889 (or 9883 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21033112023 its reverse (32021133012), we get a palindrome (53054245035).

The spelling of 21033112023 in words is "twenty-one billion, thirty-three million, one hundred twelve thousand, twenty-three".