220200120121 has 2 divisors, whose sum is σ = 220200120122. Its totient is φ = 220200120120.

The previous prime is 220200120103. The next prime is 220200120169. The reversal of 220200120121 is 121021002022.

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., 164061452025 + 56138668096 = 405045^2 + 236936^2 .

It is a cyclic number.

It is not a de Polignac number, because 220200120121 - 2¹⁷ = 220199989049 is a prime.

It is not a weakly prime, because it can be changed into another prime (220200120181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100060060 + 110100060061.

It is an arithmetic number, because the mean of its divisors is an integer number (110100060061).

Almost surely, 2^220200120121 is an apocalyptic number.

It is an amenable number.

220200120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200120121 is an equidigital number, since it uses as much as digits as its factorization.

220200120121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220200120121 its reverse (121021002022), we get a palindrome (341221122143).

The spelling of 220200120121 in words is "two hundred twenty billion, two hundred million, one hundred twenty thousand, one hundred twenty-one".