21214036533061 has 4 divisors (see below), whose sum is σ = 21898360292224. Its totient is φ = 20529712773900.

The previous prime is 21214036532987. The next prime is 21214036533097. The reversal of 21214036533061 is 16033563041212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21214036533061 - 2⁷ = 21214036532933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21214036533061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214036533961) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 342161879535 + ... + 342161879596.

It is an arithmetic number, because the mean of its divisors is an integer number (5474590073056).

Almost surely, 2^{21214036533061} is an apocalyptic number.

It is an amenable number.

21214036533061 is a deficient number, since it is larger than the sum of its proper divisors (684323759163).

21214036533061 is an equidigital number, since it uses as much as digits as its factorization.

21214036533061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684323759162.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 21214036533061 its reverse (16033563041212), we get a palindrome (37247599574273).

The spelling of 21214036533061 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred thirty-three thousand, sixty-one".