1241244220243 has 4 divisors (see below), whose sum is σ = 1242937596448. Its totient is φ = 1239550844040.

The previous prime is 1241244220201. The next prime is 1241244220291. The reversal of 1241244220243 is 3420224421421.

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 1241244220243 - 2²⁵ = 1241210665811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241244220343) 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, 846687003 + ... + 846688468.

It is an arithmetic number, because the mean of its divisors is an integer number (310734399112).

Almost surely, 2^{1241244220243} is an apocalyptic number.

1241244220243 is a deficient number, since it is larger than the sum of its proper divisors (1693376205).

1241244220243 is an equidigital number, since it uses as much as digits as its factorization.

1241244220243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693376204.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 1241244220243 its reverse (3420224421421), we get a palindrome (4661468641664).

The spelling of 1241244220243 in words is "one trillion, two hundred forty-one billion, two hundred forty-four million, two hundred twenty thousand, two hundred forty-three".