1101011021111 has 4 divisors (see below), whose sum is σ = 1165776375312. Its totient is φ = 1036245666912.

The previous prime is 1101011021087. The next prime is 1101011021137. The reversal of 1101011021111 is 1111201101011.

It is a happy number.

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 1101011021111 - 2³⁴ = 1083831151927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101011021092 and 1101011021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101011021161) 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, 32382677075 + ... + 32382677108.

It is an arithmetic number, because the mean of its divisors is an integer number (291444093828).

Almost surely, 2^{1101011021111} is an apocalyptic number.

1101011021111 is a deficient number, since it is larger than the sum of its proper divisors (64765354201).

1101011021111 is an equidigital number, since it uses as much as digits as its factorization.

1101011021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64765354200.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1101011021111 its reverse (1111201101011), we get a palindrome (2212212122122).

The spelling of 1101011021111 in words is "one trillion, one hundred one billion, eleven million, twenty-one thousand, one hundred eleven".