12101210220220 has 36 divisors (see below), whose sum is σ = 27932793513912. Its totient is φ = 4400440079200.

The previous prime is 12101210220181. The next prime is 12101210220223. The reversal of 12101210220220 is 2202201210121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12101210220194 and 12101210220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101210220223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2500247626 + ... + 2500252465.

It is an arithmetic number, because the mean of its divisors is an integer number (775910930942).

Almost surely, 2^{12101210220220} is an apocalyptic number.

12101210220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101210220220 is an abundant number, since it is smaller than the sum of its proper divisors (15831583293692).

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

12101210220220 is a wasteful number, since it uses less digits than its factorization.

12101210220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000500122 (or 5000500109 counting only the distinct ones).

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

Adding to 12101210220220 its reverse (2202201210121), we get a palindrome (14303411430341).

The spelling of 12101210220220 in words is "twelve trillion, one hundred one billion, two hundred ten million, two hundred twenty thousand, two hundred twenty".