21000012132233 has 8 divisors (see below), whose sum is σ = 21552922067040. Its totient is φ = 20454145636320.

The previous prime is 21000012132221. The next prime is 21000012132241. The reversal of 21000012132233 is 33223121000012.

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

It is a cyclic number.

It is not a de Polignac number, because 21000012132233 - 2⁴⁰ = 19900500504457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000012132433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760853683 + ... + 1760865608.

It is an arithmetic number, because the mean of its divisors is an integer number (2694115258380).

Almost surely, 2^{21000012132233} is an apocalyptic number.

It is an amenable number.

21000012132233 is a deficient number, since it is larger than the sum of its proper divisors (552909934807).

21000012132233 is an equidigital number, since it uses as much as digits as its factorization.

21000012132233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521719447.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21000012132233 its reverse (33223121000012), we get a palindrome (54223133132245).

The spelling of 21000012132233 in words is "twenty-one trillion, twelve million, one hundred thirty-two thousand, two hundred thirty-three".