212112523 has 24 divisors (see below), whose sum is σ = 263371920. Its totient is φ = 169827840.

The previous prime is 212112521. The next prime is 212112541. The reversal of 212112523 is 325211212.

It is not a de Polignac number, because 212112523 - 2¹ = 212112521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 212112523.

It is not an unprimeable number, because it can be changed into a prime (212112521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66403 + ... + 69523.

It is an arithmetic number, because the mean of its divisors is an integer number (10973830).

Almost surely, 2^212112523 is an apocalyptic number.

212112523 is a deficient number, since it is larger than the sum of its proper divisors (51259397).

212112523 is a wasteful number, since it uses less digits than its factorization.

212112523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227 (or 3220 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 212112523 is about 14564.0833216512. The cubic root of 212112523 is about 596.3786715319.

Adding to 212112523 its reverse (325211212), we get a palindrome (537323735).

The spelling of 212112523 in words is "two hundred twelve million, one hundred twelve thousand, five hundred twenty-three".