2012200212121 has 4 divisors (see below), whose sum is σ = 2195127504144. Its totient is φ = 1829272920100.

The previous prime is 2012200212109. The next prime is 2012200212131. The reversal of 2012200212121 is 1212120022102.

It is a happy number.

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 2012200212121 - 2²³ = 2012191823513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012200212095 and 2012200212104.

It is not an unprimeable number, because it can be changed into a prime (2012200212131) 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 3 ways as a sum of consecutive naturals, for example, 91463645995 + ... + 91463646016.

It is an arithmetic number, because the mean of its divisors is an integer number (548781876036).

Almost surely, 2^{2012200212121} is an apocalyptic number.

It is an amenable number.

2012200212121 is a deficient number, since it is larger than the sum of its proper divisors (182927292023).

2012200212121 is a wasteful number, since it uses less digits than its factorization.

2012200212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182927292022.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2012200212121 its reverse (1212120022102), we get a palindrome (3224320234223).

The spelling of 2012200212121 in words is "two trillion, twelve billion, two hundred million, two hundred twelve thousand, one hundred twenty-one".