21233231122100 has 36 divisors (see below), whose sum is σ = 46831457639148. Its totient is φ = 8354058144000.

The previous prime is 21233231122087. The next prime is 21233231122151. The reversal of 21233231122100 is 122113233212.

It can be written as a sum of positive squares in 6 ways, for example, as 4045424232976 + 17187806889124 = 2011324^2 + 4145818^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1740422681 + ... + 1740434880.

Almost surely, 2^{21233231122100} is an apocalyptic number.

21233231122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21233231122100 is an abundant number, since it is smaller than the sum of its proper divisors (25598226517048).

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

21233231122100 is a wasteful number, since it uses less digits than its factorization.

21233231122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480857636 (or 3480857629 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21233231122100 its reverse (122113233212), we get a palindrome (21355344355312).

It can be divided in two parts, 2123323 and 1122100, that added together give a palindrome (3245423).

The spelling of 21233231122100 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred".