21033133112123 has 8 divisors (see below), whose sum is σ = 22945269317040. Its totient is φ = 19121002439680.

The previous prime is 21033133112113. The next prime is 21033133112153. The reversal of 21033133112123 is 32121133133012.

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 21033133112123 - 2⁸ = 21033133111867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21033133112092 and 21033133112101.

It is not an unprimeable number, because it can be changed into a prime (21033133112113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14177963 + ... + 15591051.

It is an arithmetic number, because the mean of its divisors is an integer number (2868158664630).

Almost surely, 2^{21033133112123} is an apocalyptic number.

21033133112123 is a deficient number, since it is larger than the sum of its proper divisors (1912136204917).

21033133112123 is a wasteful number, since it uses less digits than its factorization.

21033133112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766237.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21033133112123 its reverse (32121133133012), we get a palindrome (53154266245135).

The spelling of 21033133112123 in words is "twenty-one trillion, thirty-three billion, one hundred thirty-three million, one hundred twelve thousand, one hundred twenty-three".