12220021212102 has 32 divisors (see below), whose sum is σ = 29624293848960. Its totient is φ = 3703036730760.

The previous prime is 12220021212083. The next prime is 12220021212109. The reversal of 12220021212102 is 20121212002221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220021212109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10286212548 + ... + 10286213735.

It is an arithmetic number, because the mean of its divisors is an integer number (925759182780).

Almost surely, 2^{12220021212102} is an apocalyptic number.

12220021212102 is an abundant number, since it is smaller than the sum of its proper divisors (17404272636858).

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

12220021212102 is a wasteful number, since it uses less digits than its factorization.

12220021212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20572426305 (or 20572426299 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220021212102 its reverse (20121212002221), we get a palindrome (32341233214323).

The spelling of 12220021212102 in words is "twelve trillion, two hundred twenty billion, twenty-one million, two hundred twelve thousand, one hundred two".