12201201020 has 48 divisors (see below), whose sum is σ = 26463749760. Its totient is φ = 4722771456.

The previous prime is 12201201017. The next prime is 12201201031. The reversal of 12201201020 is 2010210221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12201200992 and 12201201010.

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, 1460 + ... + 156219.

It is an arithmetic number, because the mean of its divisors is an integer number (551328120).

Almost surely, 2^12201201020 is an apocalyptic number.

12201201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201201020 is an abundant number, since it is smaller than the sum of its proper divisors (14262548740).

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

12201201020 is a wasteful number, since it uses less digits than its factorization.

12201201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157814 (or 157812 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12201201020 its reverse (2010210221), we get a palindrome (14211411241).

The spelling of 12201201020 in words is "twelve billion, two hundred one million, two hundred one thousand, twenty".