220797430121 has 2 divisors, whose sum is σ = 220797430122. Its totient is φ = 220797430120.

The previous prime is 220797430109. The next prime is 220797430177. The reversal of 220797430121 is 121034797022.

220797430121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176975869225 + 43821560896 = 420685^2 + 209336^2 .

It is a cyclic number.

It is not a de Polignac number, because 220797430121 - 2¹⁸ = 220797167977 is a prime.

It is a super-3 number, since 3×220797430121³ (a number of 35 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (220797030121) 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, 110398715060 + 110398715061.

It is an arithmetic number, because the mean of its divisors is an integer number (110398715061).

Almost surely, 2^220797430121 is an apocalyptic number.

It is an amenable number.

220797430121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220797430121 is an equidigital number, since it uses as much as digits as its factorization.

220797430121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 220797430121 in words is "two hundred twenty billion, seven hundred ninety-seven million, four hundred thirty thousand, one hundred twenty-one".