221034412 has 6 divisors (see below), whose sum is σ = 386810228. Its totient is φ = 110517204.

The previous prime is 221034397. The next prime is 221034419. The reversal of 221034412 is 214430122.

221034412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221034412² = 97712422576371488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221034412.

It is not an unprimeable number, because it can be changed into a prime (221034419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27629298 + ... + 27629305.

Almost surely, 2^221034412 is an apocalyptic number.

It is an amenable number.

221034412 is a deficient number, since it is larger than the sum of its proper divisors (165775816).

221034412 is a wasteful number, since it uses less digits than its factorization.

221034412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55258607 (or 55258605 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 221034412 is about 14867.2261030765. The cubic root of 221034412 is about 604.6257385173.

Adding to 221034412 its reverse (214430122), we get a palindrome (435464534).

The spelling of 221034412 in words is "two hundred twenty-one million, thirty-four thousand, four hundred twelve".