21031332332100 has 36 divisors (see below), whose sum is σ = 60850654881744. Its totient is φ = 5608355288480.

The previous prime is 21031332332077. The next prime is 21031332332107. The reversal of 21031332332100 is 123323313012.

It is not an unprimeable number, because it can be changed into a prime (21031332332107) 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 11 ways as a sum of consecutive naturals, for example, 35052220254 + ... + 35052220853.

Almost surely, 2^{21031332332100} is an apocalyptic number.

21031332332100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21031332332100 is an abundant number, since it is smaller than the sum of its proper divisors (39819322549644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21031332332100 is a wasteful number, since it uses less digits than its factorization.

21031332332100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70104441124 (or 70104441117 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21031332332100 its reverse (123323313012), we get a palindrome (21154655645112).

The spelling of 21031332332100 in words is "twenty-one trillion, thirty-one billion, three hundred thirty-two million, three hundred thirty-two thousand, one hundred".