212010012321 has 16 divisors (see below), whose sum is σ = 291345925824. Its totient is φ = 137034051264.

The previous prime is 212010012307. The next prime is 212010012337. The reversal of 212010012321 is 123210010212.

It is not a de Polignac number, because 212010012321 - 2²⁷ = 211875794593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212010012321.

It is not an unprimeable number, because it can be changed into a prime (212010012391) 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, 3343146 + ... + 3405971.

It is an arithmetic number, because the mean of its divisors is an integer number (18209120364).

Almost surely, 2^212010012321 is an apocalyptic number.

It is an amenable number.

212010012321 is a deficient number, since it is larger than the sum of its proper divisors (79335913503).

212010012321 is a wasteful number, since it uses less digits than its factorization.

212010012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6749440.

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

Adding to 212010012321 its reverse (123210010212), we get a palindrome (335220022533).

The spelling of 212010012321 in words is "two hundred twelve billion, ten million, twelve thousand, three hundred twenty-one".