221452134 has 32 divisors (see below), whose sum is σ = 455898240. Its totient is φ = 71682432.

The previous prime is 221452129. The next prime is 221452151. The reversal of 221452134 is 431254122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25614 + ... + 33150.

It is an arithmetic number, because the mean of its divisors is an integer number (14246820).

Almost surely, 2^221452134 is an apocalyptic number.

221452134 is an abundant number, since it is smaller than the sum of its proper divisors (234446106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221452134 is a wasteful number, since it uses less digits than its factorization.

221452134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684.

The product of its digits is 1920, while the sum is 24.

The square root of 221452134 is about 14881.2678895315. The cubic root of 221452134 is about 605.0063829211.

The spelling of 221452134 in words is "two hundred twenty-one million, four hundred fifty-two thousand, one hundred thirty-four".