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1001001111011 = 1191000101001
BaseRepresentation
bin11101001000100000101…
…00001100110111100011
310112200202111012010121122
432210100110030313203
5112400022241023021
62043504211442455
7132214512025016
oct16442024146743
93480674163548
101001001111011
11356582038470
121420012b642b
1373517804615
143663d3a337d
151b0895b6bab
hexe91050cde3

1001001111011 has 4 divisors (see below), whose sum is σ = 1092001212024. Its totient is φ = 910001010000.

The previous prime is 1001001111001. The next prime is 1001001111017. The reversal of 1001001111011 is 1101111001001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1001001111011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001001111011.

It is not an unprimeable number, because it can be changed into a prime (1001001111017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45500050490 + ... + 45500050511.

It is an arithmetic number, because the mean of its divisors is an integer number (273000303006).

Almost surely, 21001001111011 is an apocalyptic number.

1001001111011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001001111011 is a deficient number, since it is larger than the sum of its proper divisors (91000101013).

1001001111011 is an equidigital number, since it uses as much as digits as its factorization.

1001001111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91000101012.

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 1001001111011 its reverse (1101111001001), we get a palindrome (2102112112012).

The spelling of 1001001111011 in words is "one trillion, one billion, one million, one hundred eleven thousand, eleven".

Divisors: 1 11 91000101001 1001001111011