121200200131201 has 4 divisors (see below), whose sum is σ = 123187088658004. Its totient is φ = 119213311604400.

The previous prime is 121200200131163. The next prime is 121200200131259. The reversal of 121200200131201 is 102131002002121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43172587242225 + 78027612888976 = 6570585^2 + 8833324^2 .

It is a cyclic number.

It is not a de Polignac number, because 121200200131201 - 2²¹ = 121200198034049 is a prime.

It is a super-2 number, since 2×121200200131201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121200200131001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993444263310 + ... + 993444263431.

It is an arithmetic number, because the mean of its divisors is an integer number (30796772164501).

Almost surely, 2^{121200200131201} is an apocalyptic number.

It is an amenable number.

121200200131201 is a deficient number, since it is larger than the sum of its proper divisors (1986888526803).

121200200131201 is an equidigital number, since it uses as much as digits as its factorization.

121200200131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986888526802.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121200200131201 its reverse (102131002002121), we get a palindrome (223331202133322).

The spelling of 121200200131201 in words is "one hundred twenty-one trillion, two hundred billion, two hundred million, one hundred thirty-one thousand, two hundred one".