2012405143121 has 8 divisors (see below), whose sum is σ = 2020720532544. Its totient is φ = 2004092118000.

The previous prime is 2012405143117. The next prime is 2012405143123. The reversal of 2012405143121 is 1213415042102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2012405143121 - 2² = 2012405143117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012405143123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125035 + ... + 2300111.

It is an arithmetic number, because the mean of its divisors is an integer number (252590066568).

Almost surely, 2^{2012405143121} is an apocalyptic number.

It is an amenable number.

2012405143121 is a deficient number, since it is larger than the sum of its proper divisors (8315389423).

2012405143121 is a wasteful number, since it uses less digits than its factorization.

2012405143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182151.

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 2012405143121 in words is "two trillion, twelve billion, four hundred five million, one hundred forty-three thousand, one hundred twenty-one".