Search a number
10100020111 = 283103334549
BaseRepresentation
bin10010110100000001…
…00001001110001111
3222001212222011220221
421122000201032033
5131141101120421
64350114252211
7505200516526
oct113200411617
928055864827
1010100020111
11431321a665
121b5a587067
13c4c63a17c
146bb55b4bd
153e1a68841
hex25a02138f

10100020111 has 8 divisors (see below), whose sum is σ = 10145814800. Its totient is φ = 10054297152.

The previous prime is 10100020109. The next prime is 10100020163. The reversal of 10100020111 is 11102000101.

Adding to 10100020111 its reverse (11102000101), we get a palindrome (21202020212).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10100020111 - 21 = 10100020109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10100020094 and 10100020103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100021111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275065 + ... + 309613.

It is an arithmetic number, because the mean of its divisors is an integer number (1268226850).

Almost surely, 210100020111 is an apocalyptic number.

10100020111 is a deficient number, since it is larger than the sum of its proper divisors (45794689).

10100020111 is a wasteful number, since it uses less digits than its factorization.

10100020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35865.

The product of its (nonzero) digits is 2, while the sum is 7.

The spelling of 10100020111 in words is "ten billion, one hundred million, twenty thousand, one hundred eleven".