221234443233164 has 96 divisors (see below), whose sum is σ = 402532880064000. Its totient is φ = 106303550072832.

The previous prime is 221234443233121. The next prime is 221234443233229. The reversal of 221234443233164 is 461332344432122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16935953297 + ... + 16935966359.

It is an arithmetic number, because the mean of its divisors is an integer number (4193050834000).

Almost surely, 2^{221234443233164} is an apocalyptic number.

It is an amenable number.

221234443233164 is a deficient number, since it is larger than the sum of its proper divisors (181298436830836).

221234443233164 is a wasteful number, since it uses less digits than its factorization.

221234443233164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15487 (or 15485 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 44.

Adding to 221234443233164 its reverse (461332344432122), we get a palindrome (682566787665286).

The spelling of 221234443233164 in words is "two hundred twenty-one trillion, two hundred thirty-four billion, four hundred forty-three million, two hundred thirty-three thousand, one hundred sixty-four".