1131023021111 has 2 divisors, whose sum is σ = 1131023021112. Its totient is φ = 1131023021110.

The previous prime is 1131023021101. The next prime is 1131023021123. The reversal of 1131023021111 is 1111203201311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131023021111 - 2⁶ = 1131023021047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131023021111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131023021101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565511510555 + 565511510556.

It is an arithmetic number, because the mean of its divisors is an integer number (565511510556).

Almost surely, 2^{1131023021111} is an apocalyptic number.

1131023021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131023021111 is an equidigital number, since it uses as much as digits as its factorization.

1131023021111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1131023021111 its reverse (1111203201311), we get a palindrome (2242226222422).

The spelling of 1131023021111 in words is "one trillion, one hundred thirty-one billion, twenty-three million, twenty-one thousand, one hundred eleven".