220866804001 has 2 divisors, whose sum is σ = 220866804002. Its totient is φ = 220866804000.

The previous prime is 220866803977. The next prime is 220866804023. The reversal of 220866804001 is 100408668022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219075483025 + 1791320976 = 468055^2 + 42324^2 .

It is a cyclic number.

It is not a de Polignac number, because 220866804001 - 2⁷ = 220866803873 is a prime.

It is a super-2 number, since 2×220866804001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220866804401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110433402000 + 110433402001.

It is an arithmetic number, because the mean of its divisors is an integer number (110433402001).

Almost surely, 2^220866804001 is an apocalyptic number.

It is an amenable number.

220866804001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220866804001 is an equidigital number, since it uses as much as digits as its factorization.

220866804001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 220866804001 in words is "two hundred twenty billion, eight hundred sixty-six million, eight hundred four thousand, one".