11461221045 has 48 divisors (see below), whose sum is σ = 20128223232. Its totient is φ = 6032517120.

The previous prime is 11461221043. The next prime is 11461221089. The reversal of 11461221045 is 54012216411.

11461221045 is a `hidden beast` number, since 1 + 1 + 4 + 612 + 2 + 1 + 0 + 45 = 666.

11461221045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11461221045 - 2¹ = 11461221043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11461221043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1097800 + ... + 1108190.

It is an arithmetic number, because the mean of its divisors is an integer number (419337984).

Almost surely, 2^11461221045 is an apocalyptic number.

11461221045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11461221045 is a deficient number, since it is larger than the sum of its proper divisors (8667002187).

11461221045 is a wasteful number, since it uses less digits than its factorization.

11461221045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722 (or 10719 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 11461221045 its reverse (54012216411), we get a palindrome (65473437456).

The spelling of 11461221045 in words is "eleven billion, four hundred sixty-one million, two hundred twenty-one thousand, forty-five".