21214040434122 has 64 divisors (see below), whose sum is σ = 43972906982400. Its totient is φ = 6819324145920.

The previous prime is 21214040434121. The next prime is 21214040434133. The reversal of 21214040434122 is 22143404041212.

It is a self number, because there is not a number n which added to its sum of digits gives 21214040434122.

It is not an unprimeable number, because it can be changed into a prime (21214040434121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3860379 + ... + 7571697.

It is an arithmetic number, because the mean of its divisors is an integer number (687076671600).

Almost surely, 2^{21214040434122} is an apocalyptic number.

21214040434122 is an abundant number, since it is smaller than the sum of its proper divisors (22758866548278).

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

21214040434122 is a wasteful number, since it uses less digits than its factorization.

21214040434122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711691.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 21214040434122 its reverse (22143404041212), we get a palindrome (43357444475334).

The spelling of 21214040434122 in words is "twenty-one trillion, two hundred fourteen billion, forty million, four hundred thirty-four thousand, one hundred twenty-two".