212745022231 has 8 divisors (see below), whose sum is σ = 243173494784. Its totient is φ = 182325631320.

The previous prime is 212745022199. The next prime is 212745022261. The reversal of 212745022231 is 132220547212.

212745022231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212745022231 - 2⁵ = 212745022199 is a prime.

It is a super-2 number, since 2×212745022231² (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 = 212745022193 and 212745022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212745022261) 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 7 ways as a sum of consecutive naturals, for example, 2220135 + ... + 2313976.

It is an arithmetic number, because the mean of its divisors is an integer number (30396686848).

Almost surely, 2^212745022231 is an apocalyptic number.

212745022231 is a deficient number, since it is larger than the sum of its proper divisors (30428472553).

212745022231 is an equidigital number, since it uses as much as digits as its factorization.

212745022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540821.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 212745022231 its reverse (132220547212), we get a palindrome (344965569443).

The spelling of 212745022231 in words is "two hundred twelve billion, seven hundred forty-five million, twenty-two thousand, two hundred thirty-one".