21123101120033 has 16 divisors (see below), whose sum is σ = 24045472598400. Its totient is φ = 18367758689280.

The previous prime is 21123101119999. The next prime is 21123101120039. The reversal of 21123101120033 is 33002110132112.

It is a happy number.

It is not a de Polignac number, because 21123101120033 - 2⁸ = 21123101119777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21123101119987 and 21123101120014.

It is not an unprimeable number, because it can be changed into a prime (21123101120039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37724963 + ... + 38280791.

It is an arithmetic number, because the mean of its divisors is an integer number (1502842037400).

Almost surely, 2^{21123101120033} is an apocalyptic number.

21123101120033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21123101120033 is a deficient number, since it is larger than the sum of its proper divisors (2922371478367).

21123101120033 is a wasteful number, since it uses less digits than its factorization.

21123101120033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706072.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21123101120033 its reverse (33002110132112), we get a palindrome (54125211252145).

The spelling of 21123101120033 in words is "twenty-one trillion, one hundred twenty-three billion, one hundred one million, one hundred twenty thousand, thirty-three".