12111212120202 has 48 divisors (see below), whose sum is σ = 29171091575808. Its totient is φ = 3606316261920.

The previous prime is 12111212120197. The next prime is 12111212120237. The reversal of 12111212120202 is 20202121211121.

12111212120202 is a `hidden beast` number, since 121 + 11 + 212 + 120 + 202 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 834788178 + ... + 834802685.

It is an arithmetic number, because the mean of its divisors is an integer number (607731074496).

Almost surely, 2^{12111212120202} is an apocalyptic number.

12111212120202 is an abundant number, since it is smaller than the sum of its proper divisors (17059879455606).

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

12111212120202 is a wasteful number, since it uses less digits than its factorization.

12111212120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669590915 (or 1669590912 counting only the distinct ones).

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

Adding to 12111212120202 its reverse (20202121211121), we get a palindrome (32313333331323).

The spelling of 12111212120202 in words is "twelve trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty thousand, two hundred two".