221240134 has 8 divisors (see below), whose sum is σ = 334905120. Its totient is φ = 109605096.

The previous prime is 221240119. The next prime is 221240143. The reversal of 221240134 is 431042122.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507214 + ... + 507649.

It is an arithmetic number, because the mean of its divisors is an integer number (41863140).

Almost surely, 2^221240134 is an apocalyptic number.

221240134 is a deficient number, since it is larger than the sum of its proper divisors (113664986).

221240134 is a wasteful number, since it uses less digits than its factorization.

221240134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014974.

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

The square root of 221240134 is about 14874.1431349843. The cubic root of 221240134 is about 604.8132602184.

Adding to 221240134 its reverse (431042122), we get a palindrome (652282256).

The spelling of 221240134 in words is "two hundred twenty-one million, two hundred forty thousand, one hundred thirty-four".