220001022001 has 2 divisors, whose sum is σ = 220001022002. Its totient is φ = 220001022000.

The previous prime is 220001021993. The next prime is 220001022011. The reversal of 220001022001 is 100220100022.

It is an a-pointer prime, because the next prime (220001022011) can be obtained adding 220001022001 to its sum of digits (10).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219960062001 + 40960000 = 468999^2 + 6400^2 .

It is a cyclic number.

It is not a de Polignac number, because 220001022001 - 2³ = 220001021993 is a prime.

It is not a weakly prime, because it can be changed into another prime (220001022011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000511000 + 110000511001.

It is an arithmetic number, because the mean of its divisors is an integer number (110000511001).

Almost surely, 2^220001022001 is an apocalyptic number.

It is an amenable number.

220001022001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220001022001 is an equidigital number, since it uses as much as digits as its factorization.

220001022001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 220001022001 its reverse (100220100022), we get a palindrome (320221122023).

The spelling of 220001022001 in words is "two hundred twenty billion, one million, twenty-two thousand, one".