11554520132021 has 16 divisors (see below), whose sum is σ = 11745487503360. Its totient is φ = 11365216261680.

The previous prime is 11554520132017. The next prime is 11554520132149. The reversal of 11554520132021 is 12023102545511.

It is a cyclic number.

It is not a de Polignac number, because 11554520132021 - 2² = 11554520132017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11554520132521) 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, 15548036 + ... + 16274226.

It is an arithmetic number, because the mean of its divisors is an integer number (734092968960).

Almost surely, 2^{11554520132021} is an apocalyptic number.

It is an amenable number.

11554520132021 is a deficient number, since it is larger than the sum of its proper divisors (190967371339).

11554520132021 is a wasteful number, since it uses less digits than its factorization.

11554520132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727336.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 11554520132021 its reverse (12023102545511), we get a palindrome (23577622677532).

The spelling of 11554520132021 in words is "eleven trillion, five hundred fifty-four billion, five hundred twenty million, one hundred thirty-two thousand, twenty-one".