12121111301200 has 60 divisors (see below), whose sum is σ = 31768330812768. Its totient is φ = 4407676835200.

The previous prime is 12121111301153. The next prime is 12121111301279. The reversal of 12121111301200 is 210311112121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1377394612 + ... + 1377403411.

Almost surely, 2^{12121111301200} is an apocalyptic number.

12121111301200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121111301200 is an abundant number, since it is smaller than the sum of its proper divisors (19647219511568).

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

12121111301200 is a wasteful number, since it uses less digits than its factorization.

12121111301200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754798052 (or 2754798041 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12121111301200 its reverse (210311112121), we get a palindrome (12331422413321).

It can be divided in two parts, 121211 and 11301200, that added together give a palindrome (11422411).

The spelling of 12121111301200 in words is "twelve trillion, one hundred twenty-one billion, one hundred eleven million, three hundred one thousand, two hundred".