20320102321200 has 360 divisors, whose sum is σ = 76999103341680. Its totient is φ = 4921467033600.

The previous prime is 20320102321153. The next prime is 20320102321249. The reversal of 20320102321200 is 212320102302.

20320102321200 is a `hidden beast` number, since 2 + 0 + 320 + 1 + 0 + 2 + 321 + 20 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42092394 + ... + 42572406.

Almost surely, 2^{20320102321200} is an apocalyptic number.

20320102321200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20320102321200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38499551670840).

20320102321200 is an abundant number, since it is smaller than the sum of its proper divisors (56679001020480).

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

20320102321200 is a wasteful number, since it uses less digits than its factorization.

20320102321200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481117 (or 481103 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20320102321200 its reverse (212320102302), we get a palindrome (20532422423502).

The spelling of 20320102321200 in words is "twenty trillion, three hundred twenty billion, one hundred two million, three hundred twenty-one thousand, two hundred".