21103113033120 has 96 divisors (see below), whose sum is σ = 67889163702528. Its totient is φ = 5507762828288.

The previous prime is 21103113033047. The next prime is 21103113033151. The reversal of 21103113033120 is 2133031130112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467688279 + ... + 467733398.

It is an arithmetic number, because the mean of its divisors is an integer number (707178788568).

Almost surely, 2^{21103113033120} is an apocalyptic number.

21103113033120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21103113033120 is an abundant number, since it is smaller than the sum of its proper divisors (46786050669408).

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

21103113033120 is a wasteful number, since it uses less digits than its factorization.

21103113033120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935421742 (or 935421734 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21103113033120 its reverse (2133031130112), we get a palindrome (23236144163232).

The spelling of 21103113033120 in words is "twenty-one trillion, one hundred three billion, one hundred thirteen million, thirty-three thousand, one hundred twenty".