221134534 has 8 divisors (see below), whose sum is σ = 331814448. Its totient is φ = 110529720.

The previous prime is 221134519. The next prime is 221134549. The reversal of 221134534 is 435431122.

It is an interprime number because it is at equal distance from previous prime (221134519) and next prime (221134549).

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

It is a junction number, because it is equal to n+sod(n) for n = 221134499 and 221134508.

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, 10722 + ... + 23605.

It is an arithmetic number, because the mean of its divisors is an integer number (41476806).

Almost surely, 2^221134534 is an apocalyptic number.

221134534 is a deficient number, since it is larger than the sum of its proper divisors (110679914).

221134534 is a wasteful number, since it uses less digits than its factorization.

221134534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37550.

The product of its digits is 2880, while the sum is 25.

The square root of 221134534 is about 14870.5929269818. The cubic root of 221134534 is about 604.7170172154.

Adding to 221134534 its reverse (435431122), we get a palindrome (656565656).

The spelling of 221134534 in words is "two hundred twenty-one million, one hundred thirty-four thousand, five hundred thirty-four".