1155202310111 has 4 divisors (see below), whose sum is σ = 1159697260992. Its totient is φ = 1150707359232.

The previous prime is 1155202310107. The next prime is 1155202310117. The reversal of 1155202310111 is 1110132025511.

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 1155202310111 - 2² = 1155202310107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155202310117) 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, 2247475055 + ... + 2247475568.

It is an arithmetic number, because the mean of its divisors is an integer number (289924315248).

Almost surely, 2^{1155202310111} is an apocalyptic number.

1155202310111 is a deficient number, since it is larger than the sum of its proper divisors (4494950881).

1155202310111 is an equidigital number, since it uses as much as digits as its factorization.

1155202310111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494950880.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 1155202310111 its reverse (1110132025511), we get a palindrome (2265334335622).

The spelling of 1155202310111 in words is "one trillion, one hundred fifty-five billion, two hundred two million, three hundred ten thousand, one hundred eleven".