222020401 has 2 divisors, whose sum is σ = 222020402. Its totient is φ = 222020400.

The previous prime is 222020389. The next prime is 222020411. The reversal of 222020401 is 104020222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194184225 + 27836176 = 13935^2 + 5276^2 .

It is a cyclic number.

It is not a de Polignac number, because 222020401 - 2¹³ = 222012209 is a prime.

It is not a weakly prime, because it can be changed into another prime (222020411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010200 + 111010201.

It is an arithmetic number, because the mean of its divisors is an integer number (111010201).

Almost surely, 2^222020401 is an apocalyptic number.

It is an amenable number.

222020401 is a deficient number, since it is larger than the sum of its proper divisors (1).

222020401 is an equidigital number, since it uses as much as digits as its factorization.

222020401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 222020401 is about 14900.3490227578. The cubic root of 222020401 is about 605.5234419889.

Adding to 222020401 its reverse (104020222), we get a palindrome (326040623).

The spelling of 222020401 in words is "two hundred twenty-two million, twenty thousand, four hundred one".