21214433004 has 24 divisors (see below), whose sum is σ = 49718413248. Its totient is φ = 7040324880.

The previous prime is 21214432951. The next prime is 21214433029. The reversal of 21214433004 is 40033441212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3891262 + ... + 3896709.

It is an arithmetic number, because the mean of its divisors is an integer number (2071600552).

Almost surely, 2^21214433004 is an apocalyptic number.

It is an amenable number.

21214433004 is an abundant number, since it is smaller than the sum of its proper divisors (28503980244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214433004 is a wasteful number, since it uses less digits than its factorization.

21214433004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7788205 (or 7788203 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21214433004 its reverse (40033441212), we get a palindrome (61247874216).

The spelling of 21214433004 in words is "twenty-one billion, two hundred fourteen million, four hundred thirty-three thousand, four".