221121000012112 has 40 divisors (see below), whose sum is σ = 431193013836192. Its totient is φ = 109845521635200.

The previous prime is 221121000012089. The next prime is 221121000012203. The reversal of 221121000012112 is 211210000121122.

221121000012112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21339687 + ... + 29960377.

Almost surely, 2^{221121000012112} is an apocalyptic number.

It is an amenable number.

221121000012112 is a deficient number, since it is larger than the sum of its proper divisors (210072013824080).

221121000012112 is a wasteful number, since it uses less digits than its factorization.

221121000012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8631067 (or 8631061 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221121000012112 its reverse (211210000121122), we get a palindrome (432331000133234).

It can be divided in two parts, 2 and 21121000012112, that multiplied together give a palindrome (42242000024224).

The spelling of 221121000012112 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twelve thousand, one hundred twelve".