1200201120121 has 2 divisors, whose sum is σ = 1200201120122. Its totient is φ = 1200201120120.

The previous prime is 1200201120119. The next prime is 1200201120127. The reversal of 1200201120121 is 1210211020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1177248870121 + 22952250000 = 1085011^2 + 151500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200201120121 - 2¹ = 1200201120119 is a prime.

Together with 1200201120119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1200201120127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600100560060 + 600100560061.

It is an arithmetic number, because the mean of its divisors is an integer number (600100560061).

Almost surely, 2^{1200201120121} is an apocalyptic number.

It is an amenable number.

1200201120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200201120121 is an equidigital number, since it uses as much as digits as its factorization.

1200201120121 is an evil number, because the sum of its binary digits is even.

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

Adding to 1200201120121 its reverse (1210211020021), we get a palindrome (2410412140142).

The spelling of 1200201120121 in words is "one trillion, two hundred billion, two hundred one million, one hundred twenty thousand, one hundred twenty-one".