212522315 has 16 divisors (see below), whose sum is σ = 273520800. Its totient is φ = 158026752.

The previous prime is 212522293. The next prime is 212522327. The reversal of 212522315 is 513225212.

It is a cyclic number.

It is not a de Polignac number, because 212522315 - 2⁸ = 212522059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16070 + ... + 26139.

It is an arithmetic number, because the mean of its divisors is an integer number (17095050).

Almost surely, 2^212522315 is an apocalyptic number.

212522315 is a deficient number, since it is larger than the sum of its proper divisors (60998485).

212522315 is a wasteful number, since it uses less digits than its factorization.

212522315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42286.

The product of its digits is 1200, while the sum is 23.

The square root of 212522315 is about 14578.1451152058. The cubic root of 212522315 is about 596.7624835286.

Adding to 212522315 its reverse (513225212), we get a palindrome (725747527).

The spelling of 212522315 in words is "two hundred twelve million, five hundred twenty-two thousand, three hundred fifteen".