12201021112 has 32 divisors (see below), whose sum is σ = 26588188800. Its totient is φ = 5140380384.

The previous prime is 12201021109. The next prime is 12201021149. The reversal of 12201021112 is 21112010221.

It is a junction number, because it is equal to n+sod(n) for n = 12201021092 and 12201021101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843098 + ... + 1849705.

It is an arithmetic number, because the mean of its divisors is an integer number (830880900).

Almost surely, 2^12201021112 is an apocalyptic number.

It is an amenable number.

12201021112 is an abundant number, since it is smaller than the sum of its proper divisors (14387167688).

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

12201021112 is a wasteful number, since it uses less digits than its factorization.

12201021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692875 (or 3692871 counting only the distinct ones).

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

Adding to 12201021112 its reverse (21112010221), we get a palindrome (33313031333).

The spelling of 12201021112 in words is "twelve billion, two hundred one million, twenty-one thousand, one hundred twelve".