1241223744121 has 4 divisors (see below), whose sum is σ = 1241349753744. Its totient is φ = 1241097734500.

The previous prime is 1241223744113. The next prime is 1241223744133. The reversal of 1241223744121 is 1214473221421.

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 a cyclic number.

It is not a de Polignac number, because 1241223744121 - 2³ = 1241223744113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241223744421) 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, 62990035 + ... + 63009736.

It is an arithmetic number, because the mean of its divisors is an integer number (310337438436).

Almost surely, 2^{1241223744121} is an apocalyptic number.

It is an amenable number.

1241223744121 is a deficient number, since it is larger than the sum of its proper divisors (126009623).

1241223744121 is an equidigital number, since it uses as much as digits as its factorization.

1241223744121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126009622.

The product of its digits is 21504, while the sum is 34.

Adding to 1241223744121 its reverse (1214473221421), we get a palindrome (2455696965542).

The spelling of 1241223744121 in words is "one trillion, two hundred forty-one billion, two hundred twenty-three million, seven hundred forty-four thousand, one hundred twenty-one".