1151366404221 has 12 divisors (see below), whose sum is σ = 1814274334080. Its totient is φ = 697797820680.

The previous prime is 1151366404211. The next prime is 1151366404267. The reversal of 1151366404221 is 1224046631511.

1151366404221 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 3 + 6 + 640 + 4 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 1151366404221 - 2⁹ = 1151366403709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151366404211) 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 11 ways as a sum of consecutive naturals, for example, 5814981741 + ... + 5814981938.

It is an arithmetic number, because the mean of its divisors is an integer number (151189527840).

Almost surely, 2^{1151366404221} is an apocalyptic number.

1151366404221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1151366404221 is a deficient number, since it is larger than the sum of its proper divisors (662907929859).

1151366404221 is a wasteful number, since it uses less digits than its factorization.

1151366404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11629963696 (or 11629963693 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 1151366404221 in words is "one trillion, one hundred fifty-one billion, three hundred sixty-six million, four hundred four thousand, two hundred twenty-one".