1221443114243 has 8 divisors (see below), whose sum is σ = 1402614102720. Its totient is φ = 1051960576680.

The previous prime is 1221443114231. The next prime is 1221443114251. The reversal of 1221443114243 is 3424113441221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221443114243 - 2⁸ = 1221443113987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221443114293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2922112505 + ... + 2922112922.

It is an arithmetic number, because the mean of its divisors is an integer number (175326762840).

Almost surely, 2^{1221443114243} is an apocalyptic number.

1221443114243 is a deficient number, since it is larger than the sum of its proper divisors (181170988477).

1221443114243 is a wasteful number, since it uses less digits than its factorization.

1221443114243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844225457.

The product of its digits is 18432, while the sum is 32.

Adding to 1221443114243 its reverse (3424113441221), we get a palindrome (4645556555464).

The spelling of 1221443114243 in words is "one trillion, two hundred twenty-one billion, four hundred forty-three million, one hundred fourteen thousand, two hundred forty-three".