221034115012 has 12 divisors (see below), whose sum is σ = 389045596716. Its totient is φ = 109878230240.

The previous prime is 221034115009. The next prime is 221034115067. The reversal of 221034115012 is 210511430122.

It can be written as a sum of positive squares in 2 ways, for example, as 88722962496 + 132311152516 = 297864^2 + 363746^2 .

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, 159706039 + ... + 159707422.

It is an arithmetic number, because the mean of its divisors is an integer number (32420466393).

Almost surely, 2^221034115012 is an apocalyptic number.

It is an amenable number.

221034115012 is a deficient number, since it is larger than the sum of its proper divisors (168011481704).

221034115012 is a wasteful number, since it uses less digits than its factorization.

221034115012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319413638 (or 319413636 counting only the distinct ones).

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

Adding to 221034115012 its reverse (210511430122), we get a palindrome (431545545134).

The spelling of 221034115012 in words is "two hundred twenty-one billion, thirty-four million, one hundred fifteen thousand, twelve".