221362134 has 128 divisors (see below), whose sum is σ = 564682752. Its totient is φ = 56401920.

The previous prime is 221362111. The next prime is 221362147. The reversal of 221362134 is 431263122.

221362134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 63 ways as a sum of consecutive naturals, for example, 1615714 + ... + 1615850.

It is an arithmetic number, because the mean of its divisors is an integer number (4411584).

Almost surely, 2^221362134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221362134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282341376).

221362134 is an abundant number, since it is smaller than the sum of its proper divisors (343320618).

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

221362134 is a wasteful number, since it uses less digits than its factorization.

221362134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270.

The product of its digits is 1728, while the sum is 24.

The square root of 221362134 is about 14878.2436463448. The cubic root of 221362134 is about 604.9244119303.

The spelling of 221362134 in words is "two hundred twenty-one million, three hundred sixty-two thousand, one hundred thirty-four".