1165421222204 has 12 divisors (see below), whose sum is σ = 2043640883928. Its totient is φ = 581523826800.

The previous prime is 1165421222143. The next prime is 1165421222233. The reversal of 1165421222204 is 4022221245611.

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, 296693867 + ... + 296697794.

It is an arithmetic number, because the mean of its divisors is an integer number (170303406994).

Almost surely, 2^{1165421222204} is an apocalyptic number.

It is an amenable number.

1165421222204 is a deficient number, since it is larger than the sum of its proper divisors (878219661724).

1165421222204 is a wasteful number, since it uses less digits than its factorization.

1165421222204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593392156 (or 593392154 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 1165421222204 its reverse (4022221245611), we get a palindrome (5187642467815).

The spelling of 1165421222204 in words is "one trillion, one hundred sixty-five billion, four hundred twenty-one million, two hundred twenty-two thousand, two hundred four".