2012402321 has 2 divisors, whose sum is σ = 2012402322. Its totient is φ = 2012402320.

The previous prime is 2012402281. The next prime is 2012402351. The reversal of 2012402321 is 1232042102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1864512400 + 147889921 = 43180^2 + 12161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012402321 - 2¹⁰ = 2012401297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012402321.

It is not a weakly prime, because it can be changed into another prime (2012402351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006201160 + 1006201161.

It is an arithmetic number, because the mean of its divisors is an integer number (1006201161).

Almost surely, 2^2012402321 is an apocalyptic number.

It is an amenable number.

2012402321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012402321 is an equidigital number, since it uses as much as digits as its factorization.

2012402321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2012402321 is about 44859.8074115349. The cubic root of 2012402321 is about 1262.5200093028.

Adding to 2012402321 its reverse (1232042102), we get a palindrome (3244444423).

The spelling of 2012402321 in words is "two billion, twelve million, four hundred two thousand, three hundred twenty-one".