1111021111011 has 16 divisors (see below), whose sum is σ = 1693726834688. Its totient is φ = 634590849600.

The previous prime is 1111021111007. The next prime is 1111021111027. The reversal of 1111021111011 is 1101111201111.

It is not a de Polignac number, because 1111021111011 - 2² = 1111021111007 is a prime.

It is a super-2 number, since 2×1111021111011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1111021111091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11549155 + ... + 11644956.

It is an arithmetic number, because the mean of its divisors is an integer number (105857927168).

Almost surely, 2^{1111021111011} is an apocalyptic number.

1111021111011 is a deficient number, since it is larger than the sum of its proper divisors (582705723677).

1111021111011 is a wasteful number, since it uses less digits than its factorization.

1111021111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23196402.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 1111021111011 its reverse (1101111201111), we get a palindrome (2212132312122).

The spelling of 1111021111011 in words is "one trillion, one hundred eleven billion, twenty-one million, one hundred eleven thousand, eleven".