212230131121 has 4 divisors (see below), whose sum is σ = 213075669744. Its totient is φ = 211384592500.

The previous prime is 212230131077. The next prime is 212230131131. The reversal of 212230131121 is 121131032212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212230131121 - 2¹⁷ = 212230000049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212230131131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422768935 + ... + 422769436.

It is an arithmetic number, because the mean of its divisors is an integer number (53268917436).

Almost surely, 2^212230131121 is an apocalyptic number.

It is an amenable number.

212230131121 is a deficient number, since it is larger than the sum of its proper divisors (845538623).

212230131121 is an equidigital number, since it uses as much as digits as its factorization.

212230131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845538622.

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

Adding to 212230131121 its reverse (121131032212), we get a palindrome (333361163333).

The spelling of 212230131121 in words is "two hundred twelve billion, two hundred thirty million, one hundred thirty-one thousand, one hundred twenty-one".