21001100230033 has 32 divisors (see below), whose sum is σ = 26735600943360. Its totient is φ = 16022509378560.

The previous prime is 21001100230007. The next prime is 21001100230039. The reversal of 21001100230033 is 33003200110012.

It is a cyclic number.

It is not a de Polignac number, because 21001100230033 - 2²¹ = 21001098132881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21001100229989 and 21001100230016.

It is not an unprimeable number, because it can be changed into a prime (21001100230039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12865638 + ... + 14405791.

It is an arithmetic number, because the mean of its divisors is an integer number (835487529480).

Almost surely, 2^{21001100230033} is an apocalyptic number.

It is an amenable number.

21001100230033 is a deficient number, since it is larger than the sum of its proper divisors (5734500713327).

21001100230033 is a wasteful number, since it uses less digits than its factorization.

21001100230033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27271657.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21001100230033 its reverse (33003200110012), we get a palindrome (54004300340045).

The spelling of 21001100230033 in words is "twenty-one trillion, one billion, one hundred million, two hundred thirty thousand, thirty-three".