2012231213021 has 16 divisors (see below), whose sum is σ = 2091961643520. Its totient is φ = 1933450767360.

The previous prime is 2012231213011. The next prime is 2012231213059. The reversal of 2012231213021 is 1203121322102.

It is a cyclic number.

It is not a de Polignac number, because 2012231213021 - 2³⁴ = 1995051343837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012231212984 and 2012231213002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012231213011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4901141 + ... + 5295813.

It is an arithmetic number, because the mean of its divisors is an integer number (130747602720).

Almost surely, 2^{2012231213021} is an apocalyptic number.

It is an amenable number.

2012231213021 is a deficient number, since it is larger than the sum of its proper divisors (79730430499).

2012231213021 is a wasteful number, since it uses less digits than its factorization.

2012231213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395876.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2012231213021 its reverse (1203121322102), we get a palindrome (3215352535123).

The spelling of 2012231213021 in words is "two trillion, twelve billion, two hundred thirty-one million, two hundred thirteen thousand, twenty-one".