111041203161 has 16 divisors (see below), whose sum is σ = 169218975744. Its totient is φ = 63447116304.

The previous prime is 111041203159. The next prime is 111041203187. The reversal of 111041203161 is 161302140111.

It is not a de Polignac number, because 111041203161 - 2¹ = 111041203159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (111041203061) 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, 73390 + ... + 476936.

It is an arithmetic number, because the mean of its divisors is an integer number (10576185984).

Almost surely, 2^111041203161 is an apocalyptic number.

It is an amenable number.

111041203161 is a deficient number, since it is larger than the sum of its proper divisors (58177772583).

111041203161 is a wasteful number, since it uses less digits than its factorization.

111041203161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416660.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 111041203161 its reverse (161302140111), we get a palindrome (272343343272).

The spelling of 111041203161 in words is "one hundred eleven billion, forty-one million, two hundred three thousand, one hundred sixty-one".