1011233120111 has 16 divisors (see below), whose sum is σ = 1071592913664. Its totient is φ = 950970998784.

The previous prime is 1011233120089. The next prime is 1011233120129. The reversal of 1011233120111 is 1110213321101.

It is a cyclic number.

It is not a de Polignac number, because 1011233120111 - 2⁶ = 1011233120047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 1011233120111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011233120171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193238951 + ... + 193244183.

It is an arithmetic number, because the mean of its divisors is an integer number (66974557104).

Almost surely, 2^{1011233120111} is an apocalyptic number.

1011233120111 is a deficient number, since it is larger than the sum of its proper divisors (60359793553).

1011233120111 is a wasteful number, since it uses less digits than its factorization.

1011233120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12370.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1011233120111 its reverse (1110213321101), we get a palindrome (2121446441212).

The spelling of 1011233120111 in words is "one trillion, eleven billion, two hundred thirty-three million, one hundred twenty thousand, one hundred eleven".