1131243100121 has 8 divisors (see below), whose sum is σ = 1131910798080. Its totient is φ = 1130575547088.

The previous prime is 1131243100087. The next prime is 1131243100123. The reversal of 1131243100121 is 1210013421311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131243100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131243100093 and 1131243100102.

It is not an unprimeable number, because it can be changed into a prime (1131243100123) 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, 18218690 + ... + 18280676.

It is an arithmetic number, because the mean of its divisors is an integer number (141488849760).

Almost surely, 2^{1131243100121} is an apocalyptic number.

It is an amenable number.

1131243100121 is a deficient number, since it is larger than the sum of its proper divisors (667697959).

1131243100121 is an equidigital number, since it uses as much as digits as its factorization.

1131243100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72463.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1131243100121 its reverse (1210013421311), we get a palindrome (2341256521432).

The spelling of 1131243100121 in words is "one trillion, one hundred thirty-one billion, two hundred forty-three million, one hundred thousand, one hundred twenty-one".