121201211200 has 84 divisors (see below), whose sum is σ = 301018358592. Its totient is φ = 48027328000.

The previous prime is 121201211191. The next prime is 121201211279. The reversal of 121201211200 is 2112102121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182776 + ... + 525175.

It is an arithmetic number, because the mean of its divisors is an integer number (3583551888).

Almost surely, 2^121201211200 is an apocalyptic number.

121201211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201211200 is an abundant number, since it is smaller than the sum of its proper divisors (179817147392).

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

121201211200 is a wasteful number, since it uses less digits than its factorization.

121201211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708080 (or 708065 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121201211200 its reverse (2112102121), we get a palindrome (123313313321).

The spelling of 121201211200 in words is "one hundred twenty-one billion, two hundred one million, two hundred eleven thousand, two hundred".