200120220010181 has 2 divisors, whose sum is σ = 200120220010182. Its totient is φ = 200120220010180.

The previous prime is 200120220010127. The next prime is 200120220010213. The reversal of 200120220010181 is 181010022021002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122833088494081 + 77287131516100 = 11083009^2 + 8791310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200120220010181 is a prime.

It is a super-2 number, since 2×200120220010181² (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 (200120220010481) 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 as a sum of consecutive naturals, namely, 100060110005090 + 100060110005091.

It is an arithmetic number, because the mean of its divisors is an integer number (100060110005091).

Almost surely, 2^{200120220010181} is an apocalyptic number.

It is an amenable number.

200120220010181 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120220010181 is an equidigital number, since it uses as much as digits as its factorization.

200120220010181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 200120220010181 its reverse (181010022021002), we get a palindrome (381130242031183).

The spelling of 200120220010181 in words is "two hundred trillion, one hundred twenty billion, two hundred twenty million, ten thousand, one hundred eighty-one".