11012001111 has 48 divisors (see below), whose sum is σ = 17300774400. Its totient is φ = 6986152800.

The previous prime is 11012001079. The next prime is 11012001127. The reversal of 11012001111 is 11110021011.

It is not a de Polignac number, because 11012001111 - 2⁵ = 11012001079 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 11012001093 and 11012001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012001131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1107261 + ... + 1117161.

It is an arithmetic number, because the mean of its divisors is an integer number (360432800).

Almost surely, 2^11012001111 is an apocalyptic number.

11012001111 is a deficient number, since it is larger than the sum of its proper divisors (6288773289).

11012001111 is an equidigital number, since it uses as much as digits as its factorization.

11012001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10138 (or 10126 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11012001111 its reverse (11110021011), we get a palindrome (22122022122).

The spelling of 11012001111 in words is "eleven billion, twelve million, one thousand, one hundred eleven".