221020120011200 has 336 divisors, whose sum is σ = 553492211564544. Its totient is φ = 86858027827200.

The previous prime is 221020120011191. The next prime is 221020120011203. The reversal of 221020120011200 is 2110021020122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020120011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8654884832 + ... + 8654910368.

It is an arithmetic number, because the mean of its divisors is an integer number (1647298248704).

Almost surely, 2^{221020120011200} is an apocalyptic number.

221020120011200 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 221020120011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276746105782272).

221020120011200 is an abundant number, since it is smaller than the sum of its proper divisors (332472091553344).

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

221020120011200 is a wasteful number, since it uses less digits than its factorization.

221020120011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26100 (or 26085 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221020120011200 its reverse (2110021020122), we get a palindrome (223130141031322).

The spelling of 221020120011200 in words is "two hundred twenty-one trillion, twenty billion, one hundred twenty million, eleven thousand, two hundred".