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1101110021 = 111928118749
BaseRepresentation
bin100000110100001…
…1001101100000101
32211201221011222122
41001220121230011
54223341010041
6301132335325
736200165204
oct10150315405
92751834878
101101110021
11515603290
12268914545
1314717bcbb
14a634b23b
1566a04c4b
hex41a19b05

1101110021 has 16 divisors (see below), whose sum is σ = 1269000000. Its totient is φ = 944899200.

The previous prime is 1101110011. The next prime is 1101110039. The reversal of 1101110021 is 1200111011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1101110021 - 26 = 1101109957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101109990 and 1101110008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101110011) 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, 49355 + ... + 68103.

It is an arithmetic number, because the mean of its divisors is an integer number (79312500).

Almost surely, 21101110021 is an apocalyptic number.

1101110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101110021 is a deficient number, since it is larger than the sum of its proper divisors (167889979).

1101110021 is a wasteful number, since it uses less digits than its factorization.

1101110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19060.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1101110021 is about 33182.9778802325. The cubic root of 1101110021 is about 1032.6272267871.

Adding to 1101110021 its reverse (1200111011), we get a palindrome (2301221032).

The spelling of 1101110021 in words is "one billion, one hundred one million, one hundred ten thousand, twenty-one".

Divisors: 1 11 19 209 281 3091 5339 18749 58729 206239 356231 3918541 5268469 57953159 100100911 1101110021