1201200210121 has 4 divisors (see below), whose sum is σ = 1207910826000. Its totient is φ = 1194489594244.

The previous prime is 1201200210037. The next prime is 1201200210131. The reversal of 1201200210121 is 1210120021021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201200210121 - 2²⁹ = 1200663339209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201200210131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3355307671 + ... + 3355308028.

It is an arithmetic number, because the mean of its divisors is an integer number (301977706500).

Almost surely, 2^{1201200210121} is an apocalyptic number.

It is an amenable number.

1201200210121 is a deficient number, since it is larger than the sum of its proper divisors (6710615879).

1201200210121 is an equidigital number, since it uses as much as digits as its factorization.

1201200210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710615878.

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

Adding to 1201200210121 its reverse (1210120021021), we get a palindrome (2411320231142).

The spelling of 1201200210121 in words is "one trillion, two hundred one billion, two hundred million, two hundred ten thousand, one hundred twenty-one".