212521414 has 32 divisors (see below), whose sum is σ = 381278016. Its totient is φ = 86935680.

The previous prime is 212521411. The next prime is 212521423. The reversal of 212521414 is 414125212.

212521414 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212521411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23584 + ... + 31324.

It is an arithmetic number, because the mean of its divisors is an integer number (11914938).

Almost surely, 2^212521414 is an apocalyptic number.

212521414 is a deficient number, since it is larger than the sum of its proper divisors (168756602).

212521414 is a wasteful number, since it uses less digits than its factorization.

212521414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7840.

The product of its digits is 640, while the sum is 22.

The square root of 212521414 is about 14578.1142127506. The cubic root of 212521414 is about 596.7616401916.

Adding to 212521414 its reverse (414125212), we get a palindrome (626646626).

The spelling of 212521414 in words is "two hundred twelve million, five hundred twenty-one thousand, four hundred fourteen".