1020220001 has 2 divisors, whose sum is σ = 1020220002. Its totient is φ = 1020220000.

The previous prime is 1020219979. The next prime is 1020220043. The reversal of 1020220001 is 1000220201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1003368976 + 16851025 = 31676^2 + 4105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020220001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020220081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510110000 + 510110001.

It is an arithmetic number, because the mean of its divisors is an integer number (510110001).

Almost surely, 2^1020220001 is an apocalyptic number.

It is an amenable number.

1020220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020220001 is an equidigital number, since it uses as much as digits as its factorization.

1020220001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1020220001 is about 31940.8829088991. The cubic root of 1020220001 is about 1006.6950762538.

Adding to 1020220001 its reverse (1000220201), we get a palindrome (2020440202).

It can be divided in two parts, 10202 and 20001, that added together give a palindrome (30203).

The spelling of 1020220001 in words is "one billion, twenty million, two hundred twenty thousand, one".