12210202021220 has 96 divisors (see below), whose sum is σ = 29987407650816. Its totient is φ = 4088803824000.

The previous prime is 12210202021207. The next prime is 12210202021243. The reversal of 12210202021220 is 2212020201221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187496465 + ... + 187561575.

It is an arithmetic number, because the mean of its divisors is an integer number (312368829696).

Almost surely, 2^{12210202021220} is an apocalyptic number.

12210202021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12210202021220 is an abundant number, since it is smaller than the sum of its proper divisors (17777205629596).

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

12210202021220 is a wasteful number, since it uses less digits than its factorization.

12210202021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96321 (or 96319 counting only the distinct ones).

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

Adding to 12210202021220 its reverse (2212020201221), we get a palindrome (14422222222441).

The spelling of 12210202021220 in words is "twelve trillion, two hundred ten billion, two hundred two million, twenty-one thousand, two hundred twenty".