212221414 has 32 divisors (see below), whose sum is σ = 339655680. Its totient is φ = 99237600.

The previous prime is 212221411. The next prime is 212221423. The reversal of 212221414 is 414122212.

It is a junction number, because it is equal to n+sod(n) for n = 212221391 and 212221400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221411) 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, 590967 + ... + 591325.

It is an arithmetic number, because the mean of its divisors is an integer number (10614240).

Almost surely, 2^212221414 is an apocalyptic number.

212221414 is a deficient number, since it is larger than the sum of its proper divisors (127434266).

212221414 is a wasteful number, since it uses less digits than its factorization.

212221414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 256, while the sum is 19.

The square root of 212221414 is about 14567.8211823182. The cubic root of 212221414 is about 596.4807072493.

Adding to 212221414 its reverse (414122212), we get a palindrome (626343626).

The spelling of 212221414 in words is "two hundred twelve million, two hundred twenty-one thousand, four hundred fourteen".