21342044204 has 24 divisors (see below), whose sum is σ = 40491502800. Its totient is φ = 9784062144.

The previous prime is 21342044201. The next prime is 21342044231. The reversal of 21342044204 is 40244024312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (21342044201) 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, 1369514 + ... + 1385009.

It is an arithmetic number, because the mean of its divisors is an integer number (1687145950).

Almost surely, 2^21342044204 is an apocalyptic number.

It is an amenable number.

21342044204 is a deficient number, since it is larger than the sum of its proper divisors (19149458596).

21342044204 is a wasteful number, since it uses less digits than its factorization.

21342044204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754689 (or 2754687 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 21342044204 its reverse (40244024312), we get a palindrome (61586068516).

The spelling of 21342044204 in words is "twenty-one billion, three hundred forty-two million, forty-four thousand, two hundred four".