21011012230233 has 16 divisors (see below), whose sum is σ = 28126803035520. Its totient is φ = 13951310998656.

The previous prime is 21011012230151. The next prime is 21011012230237. The reversal of 21011012230233 is 33203221011012.

It is not a de Polignac number, because 21011012230233 - 2⁹ = 21011012229721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21011012230237) 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, 844660 + ... + 6537237.

It is an arithmetic number, because the mean of its divisors is an integer number (1757925189720).

Almost surely, 2^{21011012230233} is an apocalyptic number.

It is an amenable number.

21011012230233 is a deficient number, since it is larger than the sum of its proper divisors (7115790805287).

21011012230233 is a wasteful number, since it uses less digits than its factorization.

21011012230233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7385696.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21011012230233 its reverse (33203221011012), we get a palindrome (54214233241245).

It can be divided in two parts, 2101101 and 2230233, that added together give a palindrome (4331334).

The spelling of 21011012230233 in words is "twenty-one trillion, eleven billion, twelve million, two hundred thirty thousand, two hundred thirty-three".