21042432202204 has 24 divisors (see below), whose sum is σ = 42367313167200. Its totient is φ = 8957660494656.

The previous prime is 21042432202201. The next prime is 21042432202213. The reversal of 21042432202204 is 40220223424012.

It is a happy number.

It is a super-2 number, since 2×21042432202204² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21042432202201) 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, 2521859707 + ... + 2521868050.

It is an arithmetic number, because the mean of its divisors is an integer number (1765304715300).

Almost surely, 2^{21042432202204} is an apocalyptic number.

It is an amenable number.

21042432202204 is an abundant number, since it is smaller than the sum of its proper divisors (21324880964996).

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

21042432202204 is a wasteful number, since it uses less digits than its factorization.

21042432202204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043727917 (or 5043727915 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 21042432202204 its reverse (40220223424012), we get a palindrome (61262655626216).

The spelling of 21042432202204 in words is "twenty-one trillion, forty-two billion, four hundred thirty-two million, two hundred two thousand, two hundred four".