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2111000001 = 31127973613
BaseRepresentation
bin111110111010011…
…0100110111000001
312110010012220121020
41331310310313001
513310404000001
6545250020053
7103212126645
oct17564646701
95403186536
102111000001
11993671600
124aab77629
1327846c936
14160510c25
15c54db736
hex7dd34dc1

2111000001 has 24 divisors (see below), whose sum is σ = 3133011840. Its totient is φ = 1263181920.

The previous prime is 2110999981. The next prime is 2111000009. The reversal of 2111000001 is 1000001112.

It is not a de Polignac number, because 2111000001 - 26 = 2110999937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111000009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8130 + ... + 65483.

It is an arithmetic number, because the mean of its divisors is an integer number (130542160).

Almost surely, 22111000001 is an apocalyptic number.

It is an amenable number.

2111000001 is a deficient number, since it is larger than the sum of its proper divisors (1022011839).

2111000001 is a wasteful number, since it uses less digits than its factorization.

2111000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73717 (or 73706 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 2111000001 is about 45945.6200415230. The cubic root of 2111000001 is about 1282.8112043787.

Adding to 2111000001 its reverse (1000001112), we get a palindrome (3111001113).

The spelling of 2111000001 in words is "two billion, one hundred eleven million, one", and thus it is an aban number.

Divisors: 1 3 11 33 79 121 237 363 869 2607 9559 28677 73613 220839 809743 2429229 5815427 8907173 17446281 26721519 63969697 191909091 703666667 2111000001