221103031134 has 32 divisors (see below), whose sum is σ = 447845713920. Its totient is φ = 72761244192.

The previous prime is 221103031111. The next prime is 221103031153. The reversal of 221103031134 is 431130301122.

It is a self number, because there is not a number n which added to its sum of digits gives 221103031134.

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, 8579332 + ... + 8605064.

It is an arithmetic number, because the mean of its divisors is an integer number (13995178560).

Almost surely, 2^221103031134 is an apocalyptic number.

221103031134 is an abundant number, since it is smaller than the sum of its proper divisors (226742682786).

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

221103031134 is a wasteful number, since it uses less digits than its factorization.

221103031134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43944.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221103031134 its reverse (431130301122), we get a palindrome (652233332256).

The spelling of 221103031134 in words is "two hundred twenty-one billion, one hundred three million, thirty-one thousand, one hundred thirty-four".