212072111124 has 24 divisors (see below), whose sum is σ = 495181246560. Its totient is φ = 70641229344.

The previous prime is 212072111089. The next prime is 212072111143. The reversal of 212072111124 is 421111270212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212072111094 and 212072111103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6166434 + ... + 6200729.

It is an arithmetic number, because the mean of its divisors is an integer number (20632551940).

Almost surely, 2^212072111124 is an apocalyptic number.

It is an amenable number.

212072111124 is an abundant number, since it is smaller than the sum of its proper divisors (283109135436).

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

212072111124 is a wasteful number, since it uses less digits than its factorization.

212072111124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12368599 (or 12368597 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

Adding to 212072111124 its reverse (421111270212), we get a palindrome (633183381336).

The spelling of 212072111124 in words is "two hundred twelve billion, seventy-two million, one hundred eleven thousand, one hundred twenty-four".