100112221111 has 16 divisors (see below), whose sum is σ = 127520213760. Its totient is φ = 76512124800.

The previous prime is 100112221109. The next prime is 100112221117. The reversal of 100112221111 is 111122211001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100112221111 - 2¹ = 100112221109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100112221091 and 100112221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112221117) 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, 22136665 + ... + 22141186.

It is an arithmetic number, because the mean of its divisors is an integer number (7970013360).

Almost surely, 2^100112221111 is an apocalyptic number.

100112221111 is a deficient number, since it is larger than the sum of its proper divisors (27407992649).

100112221111 is a wasteful number, since it uses less digits than its factorization.

100112221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44277894.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 100112221111 its reverse (111122211001), we get a palindrome (211234432112).

The spelling of 100112221111 in words is "one hundred billion, one hundred twelve million, two hundred twenty-one thousand, one hundred eleven".