2012210321 has 16 divisors (see below), whose sum is σ = 2329725888. Its totient is φ = 1717632000.

The previous prime is 2012210309. The next prime is 2012210339. The reversal of 2012210321 is 1230122102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2012210321 - 2³⁰ = 938468497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2012210296 and 2012210305.

It is not an unprimeable number, because it can be changed into a prime (2012210521) 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, 68546 + ... + 93396.

It is an arithmetic number, because the mean of its divisors is an integer number (145607868).

Almost surely, 2^2012210321 is an apocalyptic number.

It is an amenable number.

2012210321 is a deficient number, since it is larger than the sum of its proper divisors (317515567).

2012210321 is a wasteful number, since it uses less digits than its factorization.

2012210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25312.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2012210321 is about 44857.6673602184. The cubic root of 2012210321 is about 1262.4798563724.

Adding to 2012210321 its reverse (1230122102), we get a palindrome (3242332423).

The spelling of 2012210321 in words is "two billion, twelve million, two hundred ten thousand, three hundred twenty-one".