212211030331 has 4 divisors (see below), whose sum is σ = 212233801752. Its totient is φ = 212188258912.

The previous prime is 212211030323. The next prime is 212211030341. The reversal of 212211030331 is 133030112212.

212211030331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212211030331 - 2³ = 212211030323 is a prime.

It is a super-2 number, since 2×212211030331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212211030299 and 212211030308.

It is not an unprimeable number, because it can be changed into a prime (212211030301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11371726 + ... + 11390371.

It is an arithmetic number, because the mean of its divisors is an integer number (53058450438).

Almost surely, 2^212211030331 is an apocalyptic number.

212211030331 is a deficient number, since it is larger than the sum of its proper divisors (22771421).

212211030331 is an equidigital number, since it uses as much as digits as its factorization.

212211030331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22771420.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212211030331 its reverse (133030112212), we get a palindrome (345241142543).

The spelling of 212211030331 in words is "two hundred twelve billion, two hundred eleven million, thirty thousand, three hundred thirty-one".