221214134 has 4 divisors (see below), whose sum is σ = 331821204. Its totient is φ = 110607066.

The previous prime is 221214127. The next prime is 221214167. The reversal of 221214134 is 431412122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55303532 + ... + 55303535.

It is an arithmetic number, because the mean of its divisors is an integer number (82955301).

Almost surely, 2^221214134 is an apocalyptic number.

221214134 is a deficient number, since it is larger than the sum of its proper divisors (110607070).

221214134 is a wasteful number, since it uses less digits than its factorization.

221214134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110607069.

The product of its digits is 384, while the sum is 20.

The square root of 221214134 is about 14873.2691093787. The cubic root of 221214134 is about 604.7895668668.

Adding to 221214134 its reverse (431412122), we get a palindrome (652626256).

The spelling of 221214134 in words is "two hundred twenty-one million, two hundred fourteen thousand, one hundred thirty-four".