2012122012021 has 16 divisors (see below), whose sum is σ = 2203814822400. Its totient is φ = 1821903339520.

The previous prime is 2012122012003. The next prime is 2012122012027. The reversal of 2012122012021 is 1202102212102.

It is a happy number.

It is not a de Polignac number, because 2012122012021 - 2⁹ = 2012122011509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012122011986 and 2012122012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012122012027) 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, 3050805 + ... + 3651253.

It is an arithmetic number, because the mean of its divisors is an integer number (137738426400).

Almost surely, 2^{2012122012021} is an apocalyptic number.

It is an amenable number.

2012122012021 is a deficient number, since it is larger than the sum of its proper divisors (191692810379).

2012122012021 is a wasteful number, since it uses less digits than its factorization.

2012122012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601676.

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

Adding to 2012122012021 its reverse (1202102212102), we get a palindrome (3214224224123).

The spelling of 2012122012021 in words is "two trillion, twelve billion, one hundred twenty-two million, twelve thousand, twenty-one".