111221272717628 has 48 divisors (see below), whose sum is σ = 198545450611200. Its totient is φ = 54500639961600.

The previous prime is 111221272717627. The next prime is 111221272717631. The reversal of 111221272717628 is 826717272122111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221272717627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206611750 + ... + 1206703922.

It is an arithmetic number, because the mean of its divisors is an integer number (4136363554400).

Almost surely, 2^{111221272717628} is an apocalyptic number.

It is an amenable number.

111221272717628 is a deficient number, since it is larger than the sum of its proper divisors (87324177893572).

111221272717628 is a wasteful number, since it uses less digits than its factorization.

111221272717628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110118 (or 110116 counting only the distinct ones).

The product of its digits is 526848, while the sum is 50.

The spelling of 111221272717628 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred seventy-two million, seven hundred seventeen thousand, six hundred twenty-eight".