21214025134435 has 16 divisors (see below), whose sum is σ = 29095509643200. Its totient is φ = 14545765362816.

The previous prime is 21214025134427. The next prime is 21214025134451. The reversal of 21214025134435 is 53443152041212.

It is a cyclic number.

It is not a de Polignac number, because 21214025134435 - 2³ = 21214025134427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21214025134394 and 21214025134403.

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 15 ways as a sum of consecutive naturals, for example, 20204200 + ... + 21228229.

It is an arithmetic number, because the mean of its divisors is an integer number (1818469352700).

Almost surely, 2^{21214025134435} is an apocalyptic number.

21214025134435 is a deficient number, since it is larger than the sum of its proper divisors (7881484508765).

21214025134435 is a wasteful number, since it uses less digits than its factorization.

21214025134435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41447070.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 21214025134435 its reverse (53443152041212), we get a palindrome (74657177175647).

The spelling of 21214025134435 in words is "twenty-one trillion, two hundred fourteen billion, twenty-five million, one hundred thirty-four thousand, four hundred thirty-five".