12210121210220 has 24 divisors (see below), whose sum is σ = 25641566873664. Its totient is φ = 4883988992256.

The previous prime is 12210121210213. The next prime is 12210121210247. The reversal of 12210121210220 is 2201212101221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2016269 + ... + 5337188.

It is an arithmetic number, because the mean of its divisors is an integer number (1068398619736).

Almost surely, 2^{12210121210220} is an apocalyptic number.

12210121210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210121210220 is an abundant number, since it is smaller than the sum of its proper divisors (13431445663444).

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

12210121210220 is a wasteful number, since it uses less digits than its factorization.

12210121210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7436489 (or 7436487 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12210121210220 its reverse (2201212101221), we get a palindrome (14411333311441).

The spelling of 12210121210220 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty".