21201303414443 has 4 divisors (see below), whose sum is σ = 21212695841568. Its totient is φ = 21189910987320.

The previous prime is 21201303414437. The next prime is 21201303414457. The reversal of 21201303414443 is 34441430310212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21201303414443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21201303414413) 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, 5696210771 + ... + 5696214492.

It is an arithmetic number, because the mean of its divisors is an integer number (5303173960392).

Almost surely, 2^{21201303414443} is an apocalyptic number.

21201303414443 is a deficient number, since it is larger than the sum of its proper divisors (11392427125).

21201303414443 is a wasteful number, since it uses less digits than its factorization.

21201303414443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11392427124.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21201303414443 its reverse (34441430310212), we get a palindrome (55642733724655).

The spelling of 21201303414443 in words is "twenty-one trillion, two hundred one billion, three hundred three million, four hundred fourteen thousand, four hundred forty-three".