21011313213233 has 8 divisors (see below), whose sum is σ = 24031358352768. Its totient is φ = 17995875315264.

The previous prime is 21011313213199. The next prime is 21011313213263. The reversal of 21011313213233 is 33231231311012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21011313213233 - 2²⁸ = 21011044777777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21011313213263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1151800616 + ... + 1151818857.

It is an arithmetic number, because the mean of its divisors is an integer number (3003919794096).

Almost surely, 2^{21011313213233} is an apocalyptic number.

It is an amenable number.

21011313213233 is a deficient number, since it is larger than the sum of its proper divisors (3020045139535).

21011313213233 is a wasteful number, since it uses less digits than its factorization.

21011313213233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303620783.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21011313213233 its reverse (33231231311012), we get a palindrome (54242544524245).

The spelling of 21011313213233 in words is "twenty-one trillion, eleven billion, three hundred thirteen million, two hundred thirteen thousand, two hundred thirty-three".