21214026135361 has 8 divisors (see below), whose sum is σ = 22144306506624. Its totient is φ = 20284406714880.

The previous prime is 21214026135359. The next prime is 21214026135383. The reversal of 21214026135361 is 16353162041212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21214026135361 - 2¹ = 21214026135359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21214026135361.

It is not an unprimeable number, because it can be changed into a prime (21214026235361) 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, 165172096 + ... + 165300481.

It is an arithmetic number, because the mean of its divisors is an integer number (2768038313328).

Almost surely, 2^{21214026135361} is an apocalyptic number.

It is an amenable number.

21214026135361 is a deficient number, since it is larger than the sum of its proper divisors (930280371263).

21214026135361 is a wasteful number, since it uses less digits than its factorization.

21214026135361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330475391.

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 21214026135361 its reverse (16353162041212), we get a palindrome (37567188176573).

The spelling of 21214026135361 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred thirty-five thousand, three hundred sixty-one".