201220429 has 2 divisors, whose sum is σ = 201220430. Its totient is φ = 201220428.

The previous prime is 201220423. The next prime is 201220457. The reversal of 201220429 is 924022102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104591529 + 96628900 = 10227^2 + 9830^2 .

It is a cyclic number.

It is not a de Polignac number, because 201220429 - 2⁹ = 201219917 is a prime.

It is a super-2 number, since 2×201220429² = 80979322093888082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201220423) 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, 100610214 + 100610215.

It is an arithmetic number, because the mean of its divisors is an integer number (100610215).

Almost surely, 2^201220429 is an apocalyptic number.

It is an amenable number.

201220429 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220429 is an equidigital number, since it uses as much as digits as its factorization.

201220429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 201220429 is about 14185.2186800204. The cubic root of 201220429 is about 585.9906549547.

The spelling of 201220429 in words is "two hundred one million, two hundred twenty thousand, four hundred twenty-nine".