12021212220102 has 64 divisors (see below), whose sum is σ = 27994911759360. Its totient is φ = 3816400180032.

The previous prime is 12021212220041. The next prime is 12021212220107. The reversal of 12021212220102 is 20102221212021.

It is a happy number.

12021212220102 is a `hidden beast` number, since 120 + 212 + 12 + 220 + 102 = 666.

12021212220102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (12021212220107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20480818 + ... + 21059589.

It is an arithmetic number, because the mean of its divisors is an integer number (437420496240).

Almost surely, 2^{12021212220102} is an apocalyptic number.

12021212220102 is an abundant number, since it is smaller than the sum of its proper divisors (15973699539258).

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

12021212220102 is a wasteful number, since it uses less digits than its factorization.

12021212220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41540674 (or 41540668 counting only the distinct ones).

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

Adding to 12021212220102 its reverse (20102221212021), we get a palindrome (32123433432123).

The spelling of 12021212220102 in words is "twelve trillion, twenty-one billion, two hundred twelve million, two hundred twenty thousand, one hundred two".