21010212330100 has 72 divisors (see below), whose sum is σ = 52107554222528. Its totient is φ = 7203193401600.

The previous prime is 21010212330061. The next prime is 21010212330101. The reversal of 21010212330100 is 103321201012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010212330101) 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, 16053415 + ... + 17312785.

Almost surely, 2^{21010212330100} is an apocalyptic number.

21010212330100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010212330100 is an abundant number, since it is smaller than the sum of its proper divisors (31097341892428).

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

21010212330100 is a wasteful number, since it uses less digits than its factorization.

21010212330100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283225 (or 1283218 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21010212330100 its reverse (103321201012), we get a palindrome (21113533531112).

The spelling of 21010212330100 in words is "twenty-one trillion, ten billion, two hundred twelve million, three hundred thirty thousand, one hundred".