1212121301121 has 8 divisors (see below), whose sum is σ = 1795735260960. Its totient is φ = 808080867396.

The previous prime is 1212121301087. The next prime is 1212121301191. The reversal of 1212121301121 is 1211031212121.

It is a happy number.

1212121301121 is a `hidden beast` number, since 121 + 2 + 121 + 301 + 121 = 666.

It is not a de Polignac number, because 1212121301121 - 2²⁷ = 1211987083393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212121301094 and 1212121301103.

It is not an unprimeable number, because it can be changed into a prime (1212121301191) 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, 22446690735 + ... + 22446690788.

It is an arithmetic number, because the mean of its divisors is an integer number (224466907620).

Almost surely, 2^{1212121301121} is an apocalyptic number.

It is an amenable number.

1212121301121 is a deficient number, since it is larger than the sum of its proper divisors (583613959839).

1212121301121 is an equidigital number, since it uses as much as digits as its factorization.

1212121301121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44893381532 (or 44893381526 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1212121301121 its reverse (1211031212121), we get a palindrome (2423152513242).

The spelling of 1212121301121 in words is "one trillion, two hundred twelve billion, one hundred twenty-one million, three hundred one thousand, one hundred twenty-one".