2012130323221 has 32 divisors (see below), whose sum is σ = 2250961574400. Its totient is φ = 1790527032000.

The previous prime is 2012130323213. The next prime is 2012130323239. The reversal of 2012130323221 is 1223230312102.

It is a cyclic number.

It is not a de Polignac number, because 2012130323221 - 2³ = 2012130323213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012130323192 and 2012130323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012130321221) 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 31 ways as a sum of consecutive naturals, for example, 5777770 + ... + 6116116.

It is an arithmetic number, because the mean of its divisors is an integer number (70342549200).

Almost surely, 2^{2012130323221} is an apocalyptic number.

It is an amenable number.

2012130323221 is a deficient number, since it is larger than the sum of its proper divisors (238831251179).

2012130323221 is a wasteful number, since it uses less digits than its factorization.

2012130323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338689.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2012130323221 its reverse (1223230312102), we get a palindrome (3235360635323).

The spelling of 2012130323221 in words is "two trillion, twelve billion, one hundred thirty million, three hundred twenty-three thousand, two hundred twenty-one".