21121032333 has 4 divisors (see below), whose sum is σ = 28161376448. Its totient is φ = 14080688220.

The previous prime is 21121032329. The next prime is 21121032337. The reversal of 21121032333 is 33323012112.

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 an interprime number because it is at equal distance from previous prime (21121032329) and next prime (21121032337).

It is not a de Polignac number, because 21121032333 - 2² = 21121032329 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121032337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520172053 + ... + 3520172058.

It is an arithmetic number, because the mean of its divisors is an integer number (7040344112).

Almost surely, 2^21121032333 is an apocalyptic number.

It is an amenable number.

21121032333 is a deficient number, since it is larger than the sum of its proper divisors (7040344115).

21121032333 is an equidigital number, since it uses as much as digits as its factorization.

21121032333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040344114.

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

Adding to 21121032333 its reverse (33323012112), we get a palindrome (54444044445).

The spelling of 21121032333 in words is "twenty-one billion, one hundred twenty-one million, thirty-two thousand, three hundred thirty-three".