21344301212133 has 16 divisors (see below), whose sum is σ = 28632806254080. Its totient is φ = 14142684944496.

The previous prime is 21344301212077. The next prime is 21344301212197. The reversal of 21344301212133 is 33121210344312.

It is not a de Polignac number, because 21344301212133 - 2³³ = 21335711277541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21344301212133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344301212233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1852938 + ... + 6791316.

It is an arithmetic number, because the mean of its divisors is an integer number (1789550390880).

Almost surely, 2^{21344301212133} is an apocalyptic number.

It is an amenable number.

21344301212133 is a deficient number, since it is larger than the sum of its proper divisors (7288505041947).

21344301212133 is a wasteful number, since it uses less digits than its factorization.

21344301212133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947176.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 21344301212133 its reverse (33121210344312), we get a palindrome (54465511556445).

The spelling of 21344301212133 in words is "twenty-one trillion, three hundred forty-four billion, three hundred one million, two hundred twelve thousand, one hundred thirty-three".