4221013129 has 2 divisors, whose sum is σ = 4221013130. Its totient is φ = 4221013128.

The previous prime is 4221013127. The next prime is 4221013151. The reversal of 4221013129 is 9213101224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4065337600 + 155675529 = 63760^2 + 12477^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221013129 - 2¹ = 4221013127 is a prime.

Together with 4221013127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4221013127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110506564 + 2110506565.

It is an arithmetic number, because the mean of its divisors is an integer number (2110506565).

Almost surely, 2^4221013129 is an apocalyptic number.

It is an amenable number.

4221013129 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221013129 is an equidigital number, since it uses as much as digits as its factorization.

4221013129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 4221013129 is about 64969.3245231933. The cubic root of 4221013129 is about 1616.1149000143.

The spelling of 4221013129 in words is "four billion, two hundred twenty-one million, thirteen thousand, one hundred twenty-nine".