12021001020112 has 80 divisors (see below), whose sum is σ = 27287803718784. Its totient is φ = 5022395136000.

The previous prime is 12021001020103. The next prime is 12021001020143. The reversal of 12021001020112 is 21102010012021.

It is a junction number, because it is equal to n+sod(n) for n = 12021001020092 and 12021001020101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5075187 + ... + 7056877.

Almost surely, 2^{12021001020112} 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 12021001020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13643901859392).

12021001020112 is an abundant number, since it is smaller than the sum of its proper divisors (15266802698672).

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

12021001020112 is a wasteful number, since it uses less digits than its factorization.

12021001020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983068 (or 1983062 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021001020112 its reverse (21102010012021), we get a palindrome (33123011032133).

The spelling of 12021001020112 in words is "twelve trillion, twenty-one billion, one million, twenty thousand, one hundred twelve".