212130211321 has 16 divisors (see below), whose sum is σ = 243546725376. Its totient is φ = 180992040336.

The previous prime is 212130211277. The next prime is 212130211343. The reversal of 212130211321 is 123112031212.

It is a cyclic number.

It is not a de Polignac number, because 212130211321 - 2⁷ = 212130211193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212130212321) 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, 13446180 + ... + 13461946.

It is an arithmetic number, because the mean of its divisors is an integer number (15221670336).

Almost surely, 2^212130211321 is an apocalyptic number.

It is an amenable number.

212130211321 is a deficient number, since it is larger than the sum of its proper divisors (31416514055).

212130211321 is a wasteful number, since it uses less digits than its factorization.

212130211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24468.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212130211321 its reverse (123112031212), we get a palindrome (335242242533).

The spelling of 212130211321 in words is "two hundred twelve billion, one hundred thirty million, two hundred eleven thousand, three hundred twenty-one".