10212012321 has 16 divisors (see below), whose sum is σ = 15981734784. Its totient is φ = 5677720704.

The previous prime is 10212012313. The next prime is 10212012323. The reversal of 10212012321 is 12321021201.

It is not a de Polignac number, because 10212012321 - 2³ = 10212012313 is a prime.

10212012321 is a modest number, since divided by 12321 gives 10212 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 10212012321.

It is not an unprimeable number, because it can be changed into a prime (10212012323) 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, 6570660 + ... + 6572213.

It is an arithmetic number, because the mean of its divisors is an integer number (998858424).

Almost surely, 2^10212012321 is an apocalyptic number.

It is an amenable number.

10212012321 is a deficient number, since it is larger than the sum of its proper divisors (5769722463).

10212012321 is a wasteful number, since it uses less digits than its factorization.

10212012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142920.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10212012321 its reverse (12321021201), we get a palindrome (22533033522).

The spelling of 10212012321 in words is "ten billion, two hundred twelve million, twelve thousand, three hundred twenty-one".