1243100012241 has 4 divisors (see below), whose sum is σ = 1657466682992. Its totient is φ = 828733341492.

The previous prime is 1243100012239. The next prime is 1243100012251. The reversal of 1243100012241 is 1422100013421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1243100012241 - 2¹ = 1243100012239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243100012221) 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, 207183335371 + ... + 207183335376.

It is an arithmetic number, because the mean of its divisors is an integer number (414366670748).

Almost surely, 2^{1243100012241} is an apocalyptic number.

It is an amenable number.

1243100012241 is a deficient number, since it is larger than the sum of its proper divisors (414366670751).

1243100012241 is an equidigital number, since it uses as much as digits as its factorization.

1243100012241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414366670750.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1243100012241 its reverse (1422100013421), we get a palindrome (2665200025662).

The spelling of 1243100012241 in words is "one trillion, two hundred forty-three billion, one hundred million, twelve thousand, two hundred forty-one".