12201212220020 has 24 divisors (see below), whose sum is σ = 25806880528800. Its totient is φ = 4845373484832.

The previous prime is 12201212219951. The next prime is 12201212220023. The reversal of 12201212220020 is 2002221210221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201212220023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2194459850 + ... + 2194465409.

It is an arithmetic number, because the mean of its divisors is an integer number (1075286688700).

Almost surely, 2^{12201212220020} is an apocalyptic number.

12201212220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201212220020 is an abundant number, since it is smaller than the sum of its proper divisors (13605668308780).

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

12201212220020 is a wasteful number, since it uses less digits than its factorization.

12201212220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388925407 (or 4388925405 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12201212220020 its reverse (2002221210221), we get a palindrome (14203433430241).

The spelling of 12201212220020 in words is "twelve trillion, two hundred one billion, two hundred twelve million, two hundred twenty thousand, twenty".