111161102121 has 12 divisors (see below), whose sum is σ = 162500568048. Its totient is φ = 73214540664.

The previous prime is 111161102081. The next prime is 111161102123. The reversal of 111161102121 is 121201161111.

111161102121 is a `hidden beast` number, since 1 + 1 + 11 + 611 + 0 + 21 + 21 = 666.

It is not a de Polignac number, because 111161102121 - 2¹⁰ = 111161101097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111161102094 and 111161102103.

It is not an unprimeable number, because it can be changed into a prime (111161102123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74404275 + ... + 74405768.

It is an arithmetic number, because the mean of its divisors is an integer number (13541714004).

Almost surely, 2^111161102121 is an apocalyptic number.

It is an amenable number.

111161102121 is a deficient number, since it is larger than the sum of its proper divisors (51339465927).

111161102121 is a wasteful number, since it uses less digits than its factorization.

111161102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148810132 (or 148810129 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 111161102121 its reverse (121201161111), we get a palindrome (232362263232).

The spelling of 111161102121 in words is "one hundred eleven billion, one hundred sixty-one million, one hundred two thousand, one hundred twenty-one".