511022201 has 2 divisors, whose sum is σ = 511022202. Its totient is φ = 511022200.

The previous prime is 511022189. The next prime is 511022251. The reversal of 511022201 is 102220115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382789225 + 128232976 = 19565^2 + 11324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511022201 is a prime.

It is a super-2 number, since 2×511022201² = 522287379829768802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511022251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255511100 + 255511101.

It is an arithmetic number, because the mean of its divisors is an integer number (255511101).

Almost surely, 2^511022201 is an apocalyptic number.

It is an amenable number.

511022201 is a deficient number, since it is larger than the sum of its proper divisors (1).

511022201 is an equidigital number, since it uses as much as digits as its factorization.

511022201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 511022201 is about 22605.8001627901. The cubic root of 511022201 is about 799.4904051478.

Adding to 511022201 its reverse (102220115), we get a palindrome (613242316).

The spelling of 511022201 in words is "five hundred eleven million, twenty-two thousand, two hundred one".