12121212012102 has 48 divisors (see below), whose sum is σ = 27236324187072. Its totient is φ = 4040254420200.

The previous prime is 12121212012061. The next prime is 12121212012109. The reversal of 12121212012102 is 20121021212121.

12121212012102 is a `hidden beast` number, since 121 + 212 + 120 + 1 + 210 + 2 = 666.

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 (12121212012109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13087833 + ... + 13983339.

It is an arithmetic number, because the mean of its divisors is an integer number (567423420564).

Almost surely, 2^{12121212012102} is an apocalyptic number.

12121212012102 is an abundant number, since it is smaller than the sum of its proper divisors (15115112174970).

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

12121212012102 is an equidigital number, since it uses as much as digits as its factorization.

12121212012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923375 (or 923363 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12121212012102 its reverse (20121021212121), we get a palindrome (32242233224223).

It can be divided in two parts, 1212121 and 2012102, that added together give a palindrome (3224223).

The spelling of 12121212012102 in words is "twelve trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, one hundred two".