10001111111111 has 4 divisors (see below), whose sum is σ = 10026051538224. Its totient is φ = 9976170684000.

The previous prime is 10001111111083. The next prime is 10001111111143. The reversal of 10001111111111 is 11111111110001.

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

It is a cyclic number.

It is not a de Polignac number, because 10001111111111 - 2³⁴ = 9983931241927 is a prime.

It is a Duffinian number.

10001111111111 is a modest number, since divided by 1111111 gives 1000111 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 10001111111092 and 10001111111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001111111161) 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, 12470212955 + ... + 12470213756.

It is an arithmetic number, because the mean of its divisors is an integer number (2506512884556).

Almost surely, 2^{10001111111111} is an apocalyptic number.

10001111111111 is a deficient number, since it is larger than the sum of its proper divisors (24940427113).

10001111111111 is an equidigital number, since it uses as much as digits as its factorization.

10001111111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24940427112.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 10001111111111 its reverse (11111111110001), we get a palindrome (21112222221112).

It can be divided in two parts, 10001 and 111111111, that multiplied together give a palindrome (1111222221111).

The spelling of 10001111111111 in words is "ten trillion, one billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".