21000211332233 has 4 divisors (see below), whose sum is σ = 24000241522560. Its totient is φ = 18000181141908.

The previous prime is 21000211332203. The next prime is 21000211332239. The reversal of 21000211332233 is 33223311200012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21000211332233 - 2³² = 20995916364937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21000211332199 and 21000211332208.

It is not an unprimeable number, because it can be changed into a prime (21000211332239) 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 3 ways as a sum of consecutive naturals, for example, 1500015095153 + ... + 1500015095166.

It is an arithmetic number, because the mean of its divisors is an integer number (6000060380640).

Almost surely, 2^{21000211332233} is an apocalyptic number.

It is an amenable number.

21000211332233 is a deficient number, since it is larger than the sum of its proper divisors (3000030190327).

21000211332233 is an equidigital number, since it uses as much as digits as its factorization.

21000211332233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000030190326.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21000211332233 its reverse (33223311200012), we get a palindrome (54223522532245).

The spelling of 21000211332233 in words is "twenty-one trillion, two hundred eleven million, three hundred thirty-two thousand, two hundred thirty-three".