221244134 has 8 divisors (see below), whose sum is σ = 338927328. Its totient is φ = 108268360.

The previous prime is 221244097. The next prime is 221244173. The reversal of 221244134 is 431442122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176737 + ... + 1176924.

It is an arithmetic number, because the mean of its divisors is an integer number (42365916).

Almost surely, 2^221244134 is an apocalyptic number.

221244134 is a deficient number, since it is larger than the sum of its proper divisors (117683194).

221244134 is a wasteful number, since it uses less digits than its factorization.

221244134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353710.

The product of its digits is 1536, while the sum is 23.

The square root of 221244134 is about 14874.2775959036. The cubic root of 221244134 is about 604.8169051846.

Adding to 221244134 its reverse (431442122), we get a palindrome (652686256).

The spelling of 221244134 in words is "two hundred twenty-one million, two hundred forty-four thousand, one hundred thirty-four".