12201201021020 has 192 divisors, whose sum is σ = 28712108565504. Its totient is φ = 4318168596480.

The previous prime is 12201201021013. The next prime is 12201201021047. The reversal of 12201201021020 is 2012010210221.

It is a junction number, because it is equal to n+sod(n) for n = 12201201020986 and 12201201021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 362973734 + ... + 363007346.

It is an arithmetic number, because the mean of its divisors is an integer number (149542232112).

Almost surely, 2^{12201201021020} is an apocalyptic number.

12201201021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12201201021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14356054282752).

12201201021020 is an abundant number, since it is smaller than the sum of its proper divisors (16510907544484).

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

12201201021020 is a wasteful number, since it uses less digits than its factorization.

12201201021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34012 (or 34010 counting only the distinct ones).

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

Adding to 12201201021020 its reverse (2012010210221), we get a palindrome (14213211231241).

The spelling of 12201201021020 in words is "twelve trillion, two hundred one billion, two hundred one million, twenty-one thousand, twenty".