121320200101200 has 120 divisors (see below), whose sum is σ = 392402138875968. Its totient is φ = 32037955722240.

The previous prime is 121320200101117. The next prime is 121320200101253. The reversal of 121320200101200 is 2101002023121.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121320200101200.

It is a congruent number.

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, 490653909 + ... + 490901108.

Almost surely, 2^{121320200101200} is an apocalyptic number.

121320200101200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121320200101200 is an abundant number, since it is smaller than the sum of its proper divisors (271081938774768).

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

121320200101200 is a wasteful number, since it uses less digits than its factorization.

121320200101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981555141 (or 981555130 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121320200101200 its reverse (2101002023121), we get a palindrome (123421202124321).

The spelling of 121320200101200 in words is "one hundred twenty-one trillion, three hundred twenty billion, two hundred million, one hundred one thousand, two hundred".