Search a number
-
+
1111100111001 = 3413717285321
BaseRepresentation
bin10000001010110010101…
…110100011100010011001
310221012221110212211110000
4100022302232203202121
5121201013112023001
62210233215243213
7143163045054126
oct20126256434231
93835843784400
101111100111001
11399240056751
1215b409219509
1380a12684aaa
143bac579774d
151dd80217a86
hex102b2ba3899

1111100111001 has 10 divisors (see below), whose sum is σ = 1659791523962. Its totient is φ = 740733407280.

The previous prime is 1111100110951. The next prime is 1111100111039. The reversal of 1111100111001 is 1001110011111.

It can be written as a sum of positive squares in only one way, i.e., 710563016601 + 400537094400 = 842949^2 + 632880^2 .

It is not a de Polignac number, because 1111100111001 - 211 = 1111100108953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111100111101) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6858642580 + ... + 6858642741.

Almost surely, 21111100111001 is an apocalyptic number.

It is an amenable number.

1111100111001 is a deficient number, since it is larger than the sum of its proper divisors (548691412961).

1111100111001 is an equidigital number, since it uses as much as digits as its factorization.

1111100111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13717285333 (or 13717285324 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 1111100111001 its reverse (1001110011111), we get a palindrome (2112210122112).

It can be divided in two parts, 1111 and 100111001, that multiplied together give a palindrome (111223322111).

The spelling of 1111100111001 in words is "one trillion, one hundred eleven billion, one hundred million, one hundred eleven thousand, one".

Divisors: 1 3 9 27 81 13717285321 41151855963 123455567889 370366703667 1111100111001