221121002112112 has 10 divisors (see below), whose sum is σ = 428421941592248. Its totient is φ = 110560501056048.

The previous prime is 221121002112091. The next prime is 221121002112193. The reversal of 221121002112112 is 211211200121122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221121002112112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6910031315988 + ... + 6910031316019.

Almost surely, 2^{221121002112112} is an apocalyptic number.

It is an amenable number.

221121002112112 is a deficient number, since it is larger than the sum of its proper divisors (207300939480136).

221121002112112 is a wasteful number, since it uses less digits than its factorization.

221121002112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13820062632015 (or 13820062632009 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221121002112112 its reverse (211211200121122), we get a palindrome (432332202233234).

The spelling of 221121002112112 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two million, one hundred twelve thousand, one hundred twelve".