21032434123120 has 40 divisors (see below), whose sum is σ = 55886182100064. Its totient is φ = 7211120270592.

The previous prime is 21032434123069. The next prime is 21032434123189. The reversal of 21032434123120 is 2132143423012.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18778958479 + ... + 18778959598.

Almost surely, 2^{21032434123120} is an apocalyptic number.

21032434123120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032434123120 is an abundant number, since it is smaller than the sum of its proper divisors (34853747976944).

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

21032434123120 is a wasteful number, since it uses less digits than its factorization.

21032434123120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37557918097 (or 37557918091 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21032434123120 its reverse (2132143423012), we get a palindrome (23164577546132).

The spelling of 21032434123120 in words is "twenty-one trillion, thirty-two billion, four hundred thirty-four million, one hundred twenty-three thousand, one hundred twenty".