12001022021120 has 160 divisors (see below), whose sum is σ = 31904770794336. Its totient is φ = 4292466278400.

The previous prime is 12001022021119. The next prime is 12001022021171. The reversal of 12001022021120 is 2112022010021.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 12001022021095 and 12001022021104.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1775459 + ... + 5210978.

Almost surely, 2^{12001022021120} is an apocalyptic number.

12001022021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001022021120 is an abundant number, since it is smaller than the sum of its proper divisors (19903748773216).

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

12001022021120 is an equidigital number, since it uses as much as digits as its factorization.

12001022021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6986532 (or 6986516 counting only the distinct ones).

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

Adding to 12001022021120 its reverse (2112022010021), we get a palindrome (14113044031141).

The spelling of 12001022021120 in words is "twelve trillion, one billion, twenty-two million, twenty-one thousand, one hundred twenty".