221145010312 has 16 divisors (see below), whose sum is σ = 419895590400. Its totient is φ = 109172852880.

The previous prime is 221145010243. The next prime is 221145010321. The reversal of 221145010312 is 213010541122.

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, 174955864 + ... + 174957127.

It is an arithmetic number, because the mean of its divisors is an integer number (26243474400).

Almost surely, 2^221145010312 is an apocalyptic number.

It is an amenable number.

221145010312 is a deficient number, since it is larger than the sum of its proper divisors (198750580088).

221145010312 is a wasteful number, since it uses less digits than its factorization.

221145010312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349913076 (or 349913072 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 221145010312 its reverse (213010541122), we get a palindrome (434155551434).

The spelling of 221145010312 in words is "two hundred twenty-one billion, one hundred forty-five million, ten thousand, three hundred twelve".