21203133301233 has 80 divisors (see below), whose sum is σ = 35193614332800. Its totient is φ = 12638250996480.

The previous prime is 21203133301211. The next prime is 21203133301249. The reversal of 21203133301233 is 33210333130212.

21203133301233 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 313 + 330 + 12 + 3 + 3 = 666.

It is not a de Polignac number, because 21203133301233 - 2⁹ = 21203133300721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21203133301197 and 21203133301206.

It is not an unprimeable number, because it can be changed into a prime (21203133301033) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4234428 + ... + 7767666.

It is an arithmetic number, because the mean of its divisors is an integer number (439920179160).

Almost surely, 2^{21203133301233} is an apocalyptic number.

It is an amenable number.

21203133301233 is a deficient number, since it is larger than the sum of its proper divisors (13990481031567).

21203133301233 is a wasteful number, since it uses less digits than its factorization.

21203133301233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533444 (or 3533435 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21203133301233 its reverse (33210333130212), we get a palindrome (54413466431445).

The spelling of 21203133301233 in words is "twenty-one trillion, two hundred three billion, one hundred thirty-three million, three hundred one thousand, two hundred thirty-three".