220221022001 has 2 divisors, whose sum is σ = 220221022002. Its totient is φ = 220221022000.

The previous prime is 220221021991. The next prime is 220221022013. The reversal of 220221022001 is 100220122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111690308401 + 108530713600 = 334201^2 + 329440^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221022001 - 2²⁶ = 220153913137 is a prime.

It is not a weakly prime, because it can be changed into another prime (220221022061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110511000 + 110110511001.

It is an arithmetic number, because the mean of its divisors is an integer number (110110511001).

Almost surely, 2^220221022001 is an apocalyptic number.

It is an amenable number.

220221022001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221022001 is an equidigital number, since it uses as much as digits as its factorization.

220221022001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220221022001 its reverse (100220122022), we get a palindrome (320441144023).

The spelling of 220221022001 in words is "two hundred twenty billion, two hundred twenty-one million, twenty-two thousand, one".