201121112 has 8 divisors (see below), whose sum is σ = 377102100. Its totient is φ = 100560552.
The previous prime is 201121111. The next prime is 201121117. The reversal of 201121112 is 211121102.
It is a tau number, because it is divible by the number of its divisors (8).
It is a junction number, because it is equal to n+sod(n) for n = 201121093 and 201121102.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (201121111) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12570062 + ... + 12570077.
Almost surely, 2201121112 is an apocalyptic number.
It is an amenable number.
201121112 is a deficient number, since it is larger than the sum of its proper divisors (175980988).
201121112 is a wasteful number, since it uses less digits than its factorization.
201121112 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 25140145 (or 25140141 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 11.
The square root of 201121112 is about 14181.7175264493. The cubic root of 201121112 is about 585.8942293384.
Adding to 201121112 its reverse (211121102), we get a palindrome (412242214).
The spelling of 201121112 in words is "two hundred one million, one hundred twenty-one thousand, one hundred twelve".
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