1155344123101 has 16 divisors (see below), whose sum is σ = 1322085631360. Its totient is φ = 989026355520.

The previous prime is 1155344123099. The next prime is 1155344123207. The reversal of 1155344123101 is 1013214435511.

It is a happy number.

It is not a de Polignac number, because 1155344123101 - 2¹ = 1155344123099 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 (1155344123501) 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, 22925191 + ... + 22975531.

It is an arithmetic number, because the mean of its divisors is an integer number (82630351960).

Almost surely, 2^{1155344123101} is an apocalyptic number.

It is an amenable number.

1155344123101 is a deficient number, since it is larger than the sum of its proper divisors (166741508259).

1155344123101 is a wasteful number, since it uses less digits than its factorization.

1155344123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54484.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 1155344123101 its reverse (1013214435511), we get a palindrome (2168558558612).

The spelling of 1155344123101 in words is "one trillion, one hundred fifty-five billion, three hundred forty-four million, one hundred twenty-three thousand, one hundred one".