21240432002022 has 16 divisors (see below), whose sum is σ = 42481758513072. Its totient is φ = 7079994915840.

The previous prime is 21240432002017. The next prime is 21240432002077. The reversal of 21240432002022 is 22020023404212.

It is a junction number, because it is equal to n+sod(n) for n = 21240432001983 and 21240432002001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36962323 + ... + 37532574.

It is an arithmetic number, because the mean of its divisors is an integer number (2655109907067).

Almost surely, 2^{21240432002022} is an apocalyptic number.

21240432002022 is an abundant number, since it is smaller than the sum of its proper divisors (21241326511050).

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

21240432002022 is a wasteful number, since it uses less digits than its factorization.

21240432002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74542423.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21240432002022 its reverse (22020023404212), we get a palindrome (43260455406234).

The spelling of 21240432002022 in words is "twenty-one trillion, two hundred forty billion, four hundred thirty-two million, two thousand, twenty-two".