121131161131121 has 4 divisors (see below), whose sum is σ = 127506485401200. Its totient is φ = 114755836861044.

The previous prime is 121131161131117. The next prime is 121131161131147.

121131161131121 is nontrivially palindromic in base 10.

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 121131161131121 - 2² = 121131161131117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121131161130121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3187662135011 + ... + 3187662135048.

It is an arithmetic number, because the mean of its divisors is an integer number (31876621350300).

Almost surely, 2^{121131161131121} is an apocalyptic number.

It is an amenable number.

121131161131121 is a deficient number, since it is larger than the sum of its proper divisors (6375324270079).

121131161131121 is an equidigital number, since it uses as much as digits as its factorization.

121131161131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375324270078.

The product of its digits is 216, while the sum is 26.

The spelling of 121131161131121 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, one hundred sixty-one million, one hundred thirty-one thousand, one hundred twenty-one".