221145534244 has 12 divisors (see below), whose sum is σ = 403830975744. Its totient is φ = 105765255464.

The previous prime is 221145534101. The next prime is 221145534257. The reversal of 221145534244 is 442435541122.

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, 1201877812 + ... + 1201877995.

It is an arithmetic number, because the mean of its divisors is an integer number (33652581312).

Almost surely, 2^221145534244 is an apocalyptic number.

It is an amenable number.

221145534244 is a deficient number, since it is larger than the sum of its proper divisors (182685441500).

221145534244 is a wasteful number, since it uses less digits than its factorization.

221145534244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403755834 (or 2403755832 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

The spelling of 221145534244 in words is "two hundred twenty-one billion, one hundred forty-five million, five hundred thirty-four thousand, two hundred forty-four".