221130134 has 4 divisors (see below), whose sum is σ = 331695204. Its totient is φ = 110565066.

The previous prime is 221130127. The next prime is 221130149. The reversal of 221130134 is 431031122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431031122 = 2 ⋅215515561.

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, 55282532 + ... + 55282535.

It is an arithmetic number, because the mean of its divisors is an integer number (82923801).

Almost surely, 2^221130134 is an apocalyptic number.

221130134 is a deficient number, since it is larger than the sum of its proper divisors (110565070).

221130134 is a wasteful number, since it uses less digits than its factorization.

221130134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110565069.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 221130134 is about 14870.4449832545. Note that the first 3 decimals coincide. The cubic root of 221130134 is about 604.7130064254.

Adding to 221130134 its reverse (431031122), we get a palindrome (652161256).

The spelling of 221130134 in words is "two hundred twenty-one million, one hundred thirty thousand, one hundred thirty-four".