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121112 = 2315139
BaseRepresentation
bin11101100100011000
320011010122
4131210120
512333422
62332412
71013045
oct354430
9204118
10121112
1182aa2
125a108
1343184
14321cc
1525d42
hex1d918

121112 has 8 divisors (see below), whose sum is σ = 227100. Its totient is φ = 60552.

The previous prime is 121081. The next prime is 121123. The reversal of 121112 is 211121.

Adding to 121112 its reverse (211121), we get a palindrome (332233).

Subtracting 121112 from its reverse (211121), we obtain a palindrome (90009).

It is a tau number, because it is divible by the number of its divisors (8).

It is a Harshad number since it is a multiple of its sum of digits (8), and also a Moran number because the ratio is a prime number: 15139 = 121112 / (1 + 2 + 1 + 1 + 1 + 2).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7562 + ... + 7577.

2121112 is an apocalyptic number.

It is an amenable number.

121112 is a deficient number, since it is larger than the sum of its proper divisors (105988).

121112 is a wasteful number, since it uses less digits than its factorization.

121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145 (or 15141 counting only the distinct ones).

The product of its digits is 4, while the sum is 8.

The square root of 121112 is about 348.0114940631. The cubic root of 121112 is about 49.4761303819.

The spelling of 121112 in words is "one hundred twenty-one thousand, one hundred twelve", and thus it is an iban number.

Divisors: 1 2 4 8 15139 30278 60556 121112