21432011333 has 8 divisors (see below), whose sum is σ = 22709415960. Its totient is φ = 20156462080.

The previous prime is 21432011323. The next prime is 21432011383. The reversal of 21432011333 is 33311023412.

It can be written as a sum of positive squares in 4 ways, for example, as 1859161924 + 19572849409 = 43118^2 + 139903^2 .

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

It is not a de Polignac number, because 21432011333 - 2¹⁴ = 21431994949 is a prime.

It is a super-2 number, since 2×21432011333² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21432011299 and 21432011308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432011323) 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, 440018 + ... + 486291.

It is an arithmetic number, because the mean of its divisors is an integer number (2838676995).

Almost surely, 2^21432011333 is an apocalyptic number.

It is an amenable number.

21432011333 is a deficient number, since it is larger than the sum of its proper divisors (1277404627).

21432011333 is a wasteful number, since it uses less digits than its factorization.

21432011333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927687.

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

Adding to 21432011333 its reverse (33311023412), we get a palindrome (54743034745).

The spelling of 21432011333 in words is "twenty-one billion, four hundred thirty-two million, eleven thousand, three hundred thirty-three".