2266621001 has 2 divisors, whose sum is σ = 2266621002. Its totient is φ = 2266621000.

The previous prime is 2266620991. The next prime is 2266621039. The reversal of 2266621001 is 1001266622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2120694601 + 145926400 = 46051^2 + 12080^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266621001 - 2¹⁰ = 2266619977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2266621801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1133310500 + 1133310501.

It is an arithmetic number, because the mean of its divisors is an integer number (1133310501).

Almost surely, 2^2266621001 is an apocalyptic number.

It is an amenable number.

2266621001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2266621001 is an equidigital number, since it uses as much as digits as its factorization.

2266621001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2266621001 is about 47609.0432691101. The cubic root of 2266621001 is about 1313.5894025946.

Adding to 2266621001 its reverse (1001266622), we get a palindrome (3267887623).

The spelling of 2266621001 in words is "two billion, two hundred sixty-six million, six hundred twenty-one thousand, one".