21214035535443 has 4 divisors (see below), whose sum is σ = 28285380713928. Its totient is φ = 14142690356960.

The previous prime is 21214035535439. The next prime is 21214035535477. The reversal of 21214035535443 is 34453553041212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21214035535443 - 2² = 21214035535439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21214035535395 and 21214035535404.

It is not an unprimeable number, because it can be changed into a prime (21214035536443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3535672589238 + ... + 3535672589243.

It is an arithmetic number, because the mean of its divisors is an integer number (7071345178482).

Almost surely, 2^{21214035535443} is an apocalyptic number.

21214035535443 is a deficient number, since it is larger than the sum of its proper divisors (7071345178485).

21214035535443 is an equidigital number, since it uses as much as digits as its factorization.

21214035535443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071345178484.

The product of its (nonzero) digits is 864000, while the sum is 42.

Adding to 21214035535443 its reverse (34453553041212), we get a palindrome (55667588576655).

The spelling of 21214035535443 in words is "twenty-one trillion, two hundred fourteen billion, thirty-five million, five hundred thirty-five thousand, four hundred forty-three".