21033102123023 has 8 divisors (see below), whose sum is σ = 22046004492288. Its totient is φ = 20028401392824.

The previous prime is 21033102122999. The next prime is 21033102123071. The reversal of 21033102123023 is 32032120133012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21033102123023 - 2²⁴ = 21033085345807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21033102123023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033102123073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050404515 + ... + 2050414772.

It is an arithmetic number, because the mean of its divisors is an integer number (2755750561536).

Almost surely, 2^{21033102123023} is an apocalyptic number.

21033102123023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21033102123023 is a deficient number, since it is larger than the sum of its proper divisors (1012902369265).

21033102123023 is a wasteful number, since it uses less digits than its factorization.

21033102123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100819533.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21033102123023 its reverse (32032120133012), we get a palindrome (53065222256035).

The spelling of 21033102123023 in words is "twenty-one trillion, thirty-three billion, one hundred two million, one hundred twenty-three thousand, twenty-three".