21133032110233 has 12 divisors (see below), whose sum is σ = 22315570624548. Its totient is φ = 20010234909600.

The previous prime is 21133032110227. The next prime is 21133032110257. The reversal of 21133032110233 is 33201123033112.

It can be written as a sum of positive squares in 2 ways, for example, as 6234150061584 + 14898882048649 = 2496828^2 + 3859907^2 .

It is not a de Polignac number, because 21133032110233 - 2³⁷ = 20995593156761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21133032110198 and 21133032110207.

It is not an unprimeable number, because it can be changed into a prime (21133032110213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14710966 + ... + 16083487.

It is an arithmetic number, because the mean of its divisors is an integer number (1859630885379).

Almost surely, 2^{21133032110233} is an apocalyptic number.

It is an amenable number.

21133032110233 is a deficient number, since it is larger than the sum of its proper divisors (1182538514315).

21133032110233 is a wasteful number, since it uses less digits than its factorization.

21133032110233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30796392 (or 30796373 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21133032110233 its reverse (33201123033112), we get a palindrome (54334155143345).

The spelling of 21133032110233 in words is "twenty-one trillion, one hundred thirty-three billion, thirty-two million, one hundred ten thousand, two hundred thirty-three".