111103355121 has 16 divisors (see below), whose sum is σ = 161616054720. Its totient is φ = 67330710720.

The previous prime is 111103355113. The next prime is 111103355123. The reversal of 111103355121 is 121553301111.

It is not a de Polignac number, because 111103355121 - 2³ = 111103355113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111103355091 and 111103355100.

It is not an unprimeable number, because it can be changed into a prime (111103355123) 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, 402615 + ... + 619923.

It is an arithmetic number, because the mean of its divisors is an integer number (10101003420).

Almost surely, 2^111103355121 is an apocalyptic number.

111103355121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111103355121 is a deficient number, since it is larger than the sum of its proper divisors (50512699599).

111103355121 is a wasteful number, since it uses less digits than its factorization.

111103355121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232816.

The product of its (nonzero) digits is 450, while the sum is 24.

Adding to 111103355121 its reverse (121553301111), we get a palindrome (232656656232).

The spelling of 111103355121 in words is "one hundred eleven billion, one hundred three million, three hundred fifty-five thousand, one hundred twenty-one".