221140510534 has 8 divisors (see below), whose sum is σ = 343149068160. Its totient is φ = 106757487816.

The previous prime is 221140510519. The next prime is 221140510543. The reversal of 221140510534 is 435015041122.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906383654 + ... + 1906383769.

It is an arithmetic number, because the mean of its divisors is an integer number (42893633520).

Almost surely, 2^221140510534 is an apocalyptic number.

221140510534 is a deficient number, since it is larger than the sum of its proper divisors (122008557626).

221140510534 is a wasteful number, since it uses less digits than its factorization.

221140510534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3812767454.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 221140510534 its reverse (435015041122), we get a palindrome (656155551656).

The spelling of 221140510534 in words is "two hundred twenty-one billion, one hundred forty million, five hundred ten thousand, five hundred thirty-four".