2012101312121 has 16 divisors (see below), whose sum is σ = 2243865254400. Its totient is φ = 1793051313408.

The previous prime is 2012101312057. The next prime is 2012101312141. The reversal of 2012101312121 is 1212131012102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2012101312121 - 2⁶ = 2012101312057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2012101312121.

It is not an unprimeable number, because it can be changed into a prime (2012101312141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1202570 + ... + 2338883.

It is an arithmetic number, because the mean of its divisors is an integer number (140241578400).

Almost surely, 2^{2012101312121} is an apocalyptic number.

It is an amenable number.

2012101312121 is a deficient number, since it is larger than the sum of its proper divisors (231763942279).

2012101312121 is a wasteful number, since it uses less digits than its factorization.

2012101312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543248.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2012101312121 its reverse (1212131012102), we get a palindrome (3224232324223).

The spelling of 2012101312121 in words is "two trillion, twelve billion, one hundred one million, three hundred twelve thousand, one hundred twenty-one".