21120025345200 has 180 divisors, whose sum is σ = 73294328378128. Its totient is φ = 5631855091200.

The previous prime is 21120025345163. The next prime is 21120025345219. The reversal of 21120025345200 is 254352002112.

21120025345200 is a `hidden beast` number, since 2 + 1 + 1 + 200 + 2 + 5 + 3 + 452 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 214766442 + ... + 214864758.

Almost surely, 2^{21120025345200} is an apocalyptic number.

21120025345200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120025345200 is an abundant number, since it is smaller than the sum of its proper divisors (52174303032928).

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

21120025345200 is a wasteful number, since it uses less digits than its factorization.

21120025345200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158012 (or 157998 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 21120025345200 its reverse (254352002112), we get a palindrome (21374377347312).

The spelling of 21120025345200 in words is "twenty-one trillion, one hundred twenty billion, twenty-five million, three hundred forty-five thousand, two hundred".