21120303231120 has 40 divisors (see below), whose sum is σ = 65472940017216. Its totient is φ = 5632080861568.

The previous prime is 21120303231073. The next prime is 21120303231127. The reversal of 21120303231120 is 2113230302112.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (21120303231127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44000631492 + ... + 44000631971.

Almost surely, 2^{21120303231120} is an apocalyptic number.

21120303231120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120303231120 is an abundant number, since it is smaller than the sum of its proper divisors (44352636786096).

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

21120303231120 is a wasteful number, since it uses less digits than its factorization.

21120303231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88001263479 (or 88001263473 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21120303231120 its reverse (2113230302112), we get a palindrome (23233533533232).

The spelling of 21120303231120 in words is "twenty-one trillion, one hundred twenty billion, three hundred three million, two hundred thirty-one thousand, one hundred twenty".