212311223124 has 96 divisors (see below), whose sum is σ = 665142890496. Its totient is φ = 50903786880.

The previous prime is 212311223101. The next prime is 212311223141. The reversal of 212311223124 is 421322113212.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 212311223094 and 212311223103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8825452 + ... + 8849475.

It is an arithmetic number, because the mean of its divisors is an integer number (6928571776).

Almost surely, 2^212311223124 is an apocalyptic number.

It is an amenable number.

212311223124 is an abundant number, since it is smaller than the sum of its proper divisors (452831667372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212311223124 is a wasteful number, since it uses less digits than its factorization.

212311223124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17674965 (or 17674963 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 212311223124 its reverse (421322113212), we get a palindrome (633633336336).

The spelling of 212311223124 in words is "two hundred twelve billion, three hundred eleven million, two hundred twenty-three thousand, one hundred twenty-four".