21712935012120 has 192 divisors, whose sum is σ = 76985745351840. Its totient is φ = 5263501056000.

The previous prime is 21712935012089. The next prime is 21712935012127. The reversal of 21712935012120 is 2121053921712.

21712935012120 is a `hidden beast` number, since 2 + 1 + 7 + 1 + 29 + 3 + 501 + 2 + 120 = 666.

21712935012120 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21712935012127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95706820 + ... + 95933420.

Almost surely, 2^{21712935012120} is an apocalyptic number.

21712935012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21712935012120 is an abundant number, since it is smaller than the sum of its proper divisors (55272810339720).

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

21712935012120 is a wasteful number, since it uses less digits than its factorization.

21712935012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250826 (or 250819 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

Adding to 21712935012120 its reverse (2121053921712), we get a palindrome (23833988933832).

The spelling of 21712935012120 in words is "twenty-one trillion, seven hundred twelve billion, nine hundred thirty-five million, twelve thousand, one hundred twenty".