121220101011200 has 108 divisors (see below), whose sum is σ = 313083851486448. Its totient is φ = 46379864678400.

The previous prime is 121220101011133. The next prime is 121220101011203. The reversal of 121220101011200 is 2110101022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220101011203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411605861 + ... + 411900260.

Almost surely, 2^{121220101011200} is an apocalyptic number.

121220101011200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220101011200 is an abundant number, since it is smaller than the sum of its proper divisors (191863750475248).

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

121220101011200 is an equidigital number, since it uses as much as digits as its factorization.

121220101011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823506170 (or 823506151 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121220101011200 its reverse (2110101022121), we get a palindrome (123330202033321).

The spelling of 121220101011200 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred one million, eleven thousand, two hundred".