12212002221020 has 24 divisors (see below), whose sum is σ = 29308805330784. Its totient is φ = 4186972190016.

The previous prime is 12212002221017. The next prime is 12212002221037. The reversal of 12212002221020 is 2012220021221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12212002221020.

It is a congruent number.

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, 43614293507 + ... + 43614293786.

It is an arithmetic number, because the mean of its divisors is an integer number (1221200222116).

Almost surely, 2^{12212002221020} is an apocalyptic number.

12212002221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212002221020 is an abundant number, since it is smaller than the sum of its proper divisors (17096803109764).

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

12212002221020 is a wasteful number, since it uses less digits than its factorization.

12212002221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87228587309 (or 87228587307 counting only the distinct ones).

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

Adding to 12212002221020 its reverse (2012220021221), we get a palindrome (14224222242241).

The spelling of 12212002221020 in words is "twelve trillion, two hundred twelve billion, two million, two hundred twenty-one thousand, twenty".