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11122101 = 321235789
BaseRepresentation
bin101010011011…
…010110110101
3202221001122200
4222123112311
510321401401
61034215113
7163351644
oct52332665
922831580
1011122101
116307221
123884499
1323c5533
14169735b
15e9a686
hexa9b5b5

11122101 has 6 divisors (see below), whose sum is σ = 16065270. Its totient is φ = 7414728.

The previous prime is 11122099. The next prime is 11122129. The reversal of 11122101 is 10122111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10595025 + 527076 = 3255^2 + 726^2 .

It is not a de Polignac number, because 11122101 - 21 = 11122099 is a prime.

It is a super-2 number, since 2×111221012 = 247402261308402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1235789 = 11122101 / (1 + 1 + 1 + 2 + 2 + 1 + 0 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617886 + ... + 617903.

It is an arithmetic number, because the mean of its divisors is an integer number (2677545).

Almost surely, 211122101 is an apocalyptic number.

It is an amenable number.

11122101 is a deficient number, since it is larger than the sum of its proper divisors (4943169).

11122101 is a wasteful number, since it uses less digits than its factorization.

11122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235795 (or 1235792 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 11122101 is about 3334.9814092435. The cubic root of 11122101 is about 223.2178623890.

Adding to 11122101 its reverse (10122111), we get a palindrome (21244212).

The spelling of 11122101 in words is "eleven million, one hundred twenty-two thousand, one hundred one".

Divisors: 1 3 9 1235789 3707367 11122101