1241520111045 has 16 divisors (see below), whose sum is σ = 2207146864320. Its totient is φ = 662144059152.

The previous prime is 1241520111023. The next prime is 1241520111047. The reversal of 1241520111045 is 5401110251421.

1241520111045 is a `hidden beast` number, since 1 + 2 + 415 + 201 + 1 + 1 + 0 + 45 = 666.

It is not a de Polignac number, because 1241520111045 - 2⁹ = 1241520110533 is a prime.

It is a super-2 number, since 2×1241520111045² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241520111047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4598222499 + ... + 4598222768.

It is an arithmetic number, because the mean of its divisors is an integer number (137946679020).

Almost surely, 2^{1241520111045} is an apocalyptic number.

1241520111045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1241520111045 is a deficient number, since it is larger than the sum of its proper divisors (965626753275).

1241520111045 is an equidigital number, since it uses as much as digits as its factorization.

1241520111045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9196445281 (or 9196445275 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 1241520111045 its reverse (5401110251421), we get a palindrome (6642630362466).

The spelling of 1241520111045 in words is "one trillion, two hundred forty-one billion, five hundred twenty million, one hundred eleven thousand, forty-five".