12201121200220 has 48 divisors (see below), whose sum is σ = 25778184653088. Its totient is φ = 4850783463680.

The previous prime is 12201121200137. The next prime is 12201121200239. The reversal of 12201121200220 is 2200212110221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12201121200194 and 12201121200203.

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, 11053830 + ... + 12107410.

It is an arithmetic number, because the mean of its divisors is an integer number (537045513606).

Almost surely, 2^{12201121200220} is an apocalyptic number.

12201121200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201121200220 is an abundant number, since it is smaller than the sum of its proper divisors (13577063452868).

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

12201121200220 is a wasteful number, since it uses less digits than its factorization.

12201121200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057110 (or 1057108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12201121200220 its reverse (2200212110221), we get a palindrome (14401333310441).

The spelling of 12201121200220 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, two hundred thousand, two hundred twenty".