12121112202102 has 48 divisors (see below), whose sum is σ = 26531378565120. Its totient is φ = 3999017904000.

The previous prime is 12121112202097. The next prime is 12121112202109. The reversal of 12121112202102 is 20120221112121.

12121112202102 is a `hidden beast` number, since 1 + 21 + 211 + 1 + 220 + 210 + 2 = 666.

It is a super-2 number, since 2×12121112202102² (a number of 27 digits) contains 22 as substring.

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 (12121112202109) 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, 4274827 + ... + 6520457.

It is an arithmetic number, because the mean of its divisors is an integer number (552737053440).

Almost surely, 2^{12121112202102} is an apocalyptic number.

12121112202102 is an abundant number, since it is smaller than the sum of its proper divisors (14410266363018).

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

12121112202102 is a wasteful number, since it uses less digits than its factorization.

12121112202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248709 (or 2248706 counting only the distinct ones).

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

Adding to 12121112202102 its reverse (20120221112121), we get a palindrome (32241333314223).

The spelling of 12121112202102 in words is "twelve trillion, one hundred twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred two".