200120121001181 has 2 divisors, whose sum is σ = 200120121001182. Its totient is φ = 200120121001180.

The previous prime is 200120121001169. The next prime is 200120121001247. The reversal of 200120121001181 is 181100121021002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158889403157956 + 41230717843225 = 12605134^2 + 6421115^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120121001181 - 2¹⁸ = 200120120739037 is a prime.

It is a super-2 number, since 2×200120121001181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200120121001121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060060500590 + 100060060500591.

It is an arithmetic number, because the mean of its divisors is an integer number (100060060500591).

Almost surely, 2^{200120121001181} is an apocalyptic number.

It is an amenable number.

200120121001181 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120121001181 is an equidigital number, since it uses as much as digits as its factorization.

200120121001181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 200120121001181 its reverse (181100121021002), we get a palindrome (381220242022183).

The spelling of 200120121001181 in words is "two hundred trillion, one hundred twenty billion, one hundred twenty-one million, one thousand, one hundred eighty-one".