21412441022243 has 4 divisors (see below), whose sum is σ = 21430389423288. Its totient is φ = 21394492621200.

The previous prime is 21412441022213. The next prime is 21412441022263. The reversal of 21412441022243 is 34222014421412.

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 21412441022243 - 2³² = 21408146054947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21412441022213) 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, 8974198733 + ... + 8974201118.

It is an arithmetic number, because the mean of its divisors is an integer number (5357597355822).

Almost surely, 2^{21412441022243} is an apocalyptic number.

21412441022243 is a deficient number, since it is larger than the sum of its proper divisors (17948401045).

21412441022243 is a wasteful number, since it uses less digits than its factorization.

21412441022243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17948401044.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 21412441022243 its reverse (34222014421412), we get a palindrome (55634455443655).

The spelling of 21412441022243 in words is "twenty-one trillion, four hundred twelve billion, four hundred forty-one million, twenty-two thousand, two hundred forty-three".