120021221202112 has 56 divisors (see below), whose sum is σ = 241080421974336. Its totient is φ = 59276810888448.

The previous prime is 120021221202049. The next prime is 120021221202167. The reversal of 120021221202112 is 211202122120021.

It is a self number, because there is not a number n which added to its sum of digits gives 120021221202112.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27201763 + ... + 31304605.

It is an arithmetic number, because the mean of its divisors is an integer number (4305007535256).

Almost surely, 2^{120021221202112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120021221202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120540210987168).

120021221202112 is an abundant number, since it is smaller than the sum of its proper divisors (121059200772224).

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

120021221202112 is an equidigital number, since it uses as much as digits as its factorization.

120021221202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4108445 (or 4108435 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 120021221202112 its reverse (211202122120021), we get a palindrome (331223343322133).

The spelling of 120021221202112 in words is "one hundred twenty trillion, twenty-one billion, two hundred twenty-one million, two hundred two thousand, one hundred twelve".