21342211124234 has 48 divisors (see below), whose sum is σ = 43750466788896. Its totient is φ = 7675520479200.

The previous prime is 21342211124149. The next prime is 21342211124237. The reversal of 21342211124234 is 43242111224312.

It is a self number, because there is not a number n which added to its sum of digits gives 21342211124234.

It is not an unprimeable number, because it can be changed into a prime (21342211124237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 761446352 + ... + 761474379.

It is an arithmetic number, because the mean of its divisors is an integer number (911468058102).

Almost surely, 2^{21342211124234} is an apocalyptic number.

21342211124234 is an abundant number, since it is smaller than the sum of its proper divisors (22408255664662).

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

21342211124234 is a wasteful number, since it uses less digits than its factorization.

21342211124234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522920771 (or 1522920764 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

Adding to 21342211124234 its reverse (43242111224312), we get a palindrome (64584322348546).

The spelling of 21342211124234 in words is "twenty-one trillion, three hundred forty-two billion, two hundred eleven million, one hundred twenty-four thousand, two hundred thirty-four".