21353555132001 has 24 divisors (see below), whose sum is σ = 32658963446304. Its totient is φ = 13398069098880.

The previous prime is 21353555131969. The next prime is 21353555132083. The reversal of 21353555132001 is 10023155535312.

21353555132001 is a `hidden beast` number, since 2 + 1 + 353 + 55 + 51 + 3 + 200 + 1 = 666.

It is not a de Polignac number, because 21353555132001 - 2⁵ = 21353555131969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21353555130001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7519590 + ... + 9962496.

It is an arithmetic number, because the mean of its divisors is an integer number (1360790143596).

Almost surely, 2^{21353555132001} is an apocalyptic number.

It is an amenable number.

21353555132001 is a deficient number, since it is larger than the sum of its proper divisors (11305408314303).

21353555132001 is a wasteful number, since it uses less digits than its factorization.

21353555132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500061 (or 2500058 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The spelling of 21353555132001 in words is "twenty-one trillion, three hundred fifty-three billion, five hundred fifty-five million, one hundred thirty-two thousand, one".