212512522 has 16 divisors (see below), whose sum is σ = 330107400. Its totient is φ = 102484480.

The previous prime is 212512519. The next prime is 212512541. The reversal of 212512522 is 225215212.

212512522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 182493081 + 30019441 = 13509^2 + 5479^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212512493 and 212512502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98754 + ... + 100882.

Almost surely, 2^212512522 is an apocalyptic number.

212512522 is a deficient number, since it is larger than the sum of its proper divisors (117594878).

212512522 is a wasteful number, since it uses less digits than its factorization.

212512522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881.

The product of its digits is 800, while the sum is 22.

The square root of 212512522 is about 14577.8092318428. The cubic root of 212512522 is about 596.7533171425.

Adding to 212512522 its reverse (225215212), we get a palindrome (437727734).

The spelling of 212512522 in words is "two hundred twelve million, five hundred twelve thousand, five hundred twenty-two".