121201112211200 has 432 divisors, whose sum is σ = 358699163450880. Its totient is φ = 39642938818560.

The previous prime is 121201112211119. The next prime is 121201112211209. The reversal of 121201112211200 is 2112211102121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201112211209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 390366422 + ... + 390676778.

Almost surely, 2^{121201112211200} is an apocalyptic number.

121201112211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121201112211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179349581725440).

121201112211200 is an abundant number, since it is smaller than the sum of its proper divisors (237498051239680).

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

121201112211200 is a wasteful number, since it uses less digits than its factorization.

121201112211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310792 (or 310773 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121201112211200 its reverse (2112211102121), we get a palindrome (123313323313321).

The spelling of 121201112211200 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twelve million, two hundred eleven thousand, two hundred".