21004324122 has 16 divisors (see below), whose sum is σ = 42985594080. Its totient is φ = 6838617072.

The previous prime is 21004324093. The next prime is 21004324127. The reversal of 21004324122 is 22142340012.

21004324122 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (21004324127) 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, 40705797 + ... + 40706312.

It is an arithmetic number, because the mean of its divisors is an integer number (2686599630).

Almost surely, 2^21004324122 is an apocalyptic number.

21004324122 is an abundant number, since it is smaller than the sum of its proper divisors (21981269958).

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

21004324122 is a wasteful number, since it uses less digits than its factorization.

21004324122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81412157.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21004324122 its reverse (22142340012), we get a palindrome (43146664134).

The spelling of 21004324122 in words is "twenty-one billion, four million, three hundred twenty-four thousand, one hundred twenty-two".