2012121211001 has 16 divisors (see below), whose sum is σ = 2232387190080. Its totient is φ = 1798083482880.

The previous prime is 2012121210989. The next prime is 2012121211019. The reversal of 2012121211001 is 1001121212102.

It is a cyclic number.

It is not a de Polignac number, because 2012121211001 - 2¹⁸ = 2012120948857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012121211501) 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, 11109965 + ... + 11289621.

It is an arithmetic number, because the mean of its divisors is an integer number (139524199380).

Almost surely, 2^{2012121211001} is an apocalyptic number.

It is an amenable number.

2012121211001 is a deficient number, since it is larger than the sum of its proper divisors (220265979079).

2012121211001 is a wasteful number, since it uses less digits than its factorization.

2012121211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196984.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2012121211001 its reverse (1001121212102), we get a palindrome (3013242423103).

The spelling of 2012121211001 in words is "two trillion, twelve billion, one hundred twenty-one million, two hundred eleven thousand, one".