21120433101100 has 18 divisors (see below), whose sum is σ = 45831339829604. Its totient is φ = 8448173240400.

The previous prime is 21120433101071. The next prime is 21120433101109. The reversal of 21120433101100 is 110133402112.

It is not an unprimeable number, because it can be changed into a prime (21120433101109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105602165406 + ... + 105602165605.

Almost surely, 2^{21120433101100} is an apocalyptic number.

21120433101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120433101100 is an abundant number, since it is smaller than the sum of its proper divisors (24710906728504).

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

21120433101100 is a wasteful number, since it uses less digits than its factorization.

21120433101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211204331025 (or 211204331018 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21120433101100 its reverse (110133402112), we get a palindrome (21230566503212).

The spelling of 21120433101100 in words is "twenty-one trillion, one hundred twenty billion, four hundred thirty-three million, one hundred one thousand, one hundred".