21332233011 has 4 divisors (see below), whose sum is σ = 28442977352. Its totient is φ = 14221488672.

The previous prime is 21332233009. The next prime is 21332233051. The reversal of 21332233011 is 11033223312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21332233011 - 2¹ = 21332233009 is a prime.

It is a super-2 number, since 2×21332233011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21332233051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555372166 + ... + 3555372171.

It is an arithmetic number, because the mean of its divisors is an integer number (7110744338).

Almost surely, 2^21332233011 is an apocalyptic number.

21332233011 is a deficient number, since it is larger than the sum of its proper divisors (7110744341).

21332233011 is an equidigital number, since it uses as much as digits as its factorization.

21332233011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110744340.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21332233011 its reverse (11033223312), we get a palindrome (32365456323).

The spelling of 21332233011 in words is "twenty-one billion, three hundred thirty-two million, two hundred thirty-three thousand, eleven".