20226001 has 2 divisors, whose sum is σ = 20226002. Its totient is φ = 20226000.

The previous prime is 20225999. The next prime is 20226023. The reversal of 20226001 is 10062202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16524225 + 3701776 = 4065^2 + 1924^2 .

It is a cyclic number.

It is not a de Polignac number, because 20226001 - 2¹ = 20225999 is a prime.

It is a super-2 number, since 2×20226001² = 818182232904002, which contains 22 as substring.

Together with 20225999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20226061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10113000 + 10113001.

It is an arithmetic number, because the mean of its divisors is an integer number (10113001).

Almost surely, 2^20226001 is an apocalyptic number.

It is an amenable number.

20226001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20226001 is an equidigital number, since it uses as much as digits as its factorization.

20226001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20226001 is about 4497.3326539183. The cubic root of 20226001 is about 272.4603696260.

Adding to 20226001 its reverse (10062202), we get a palindrome (30288203).

The spelling of 20226001 in words is "twenty million, two hundred twenty-six thousand, one".