221120107 has 6 divisors (see below), whose sum is σ = 239437932. Its totient is φ = 204110712.

The previous prime is 221120087. The next prime is 221120111. The reversal of 221120107 is 701021122.

221120107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-221120107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 654033 + ... + 654370.

It is an arithmetic number, because the mean of its divisors is an integer number (39906322).

Almost surely, 2^221120107 is an apocalyptic number.

221120107 is a deficient number, since it is larger than the sum of its proper divisors (18317825).

221120107 is a wasteful number, since it uses less digits than its factorization.

221120107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308429 (or 1308416 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 221120107 is about 14870.1078341752. The cubic root of 221120107 is about 604.7038661832.

Adding to 221120107 its reverse (701021122), we get a palindrome (922141229).

The spelling of 221120107 in words is "two hundred twenty-one million, one hundred twenty thousand, one hundred seven".