4021444442129 has 2 divisors, whose sum is σ = 4021444442130. Its totient is φ = 4021444442128.

The previous prime is 4021444442053. The next prime is 4021444442149. The reversal of 4021444442129 is 9212444441204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2420675445904 + 1600768996225 = 1555852^2 + 1265215^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021444442129 - 2²⁰ = 4021443393553 is a prime.

It is a super-2 number, since 2×4021444442129² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4021444442149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010722221064 + 2010722221065.

It is an arithmetic number, because the mean of its divisors is an integer number (2010722221065).

Almost surely, 2^{4021444442129} is an apocalyptic number.

It is an amenable number.

4021444442129 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021444442129 is an equidigital number, since it uses as much as digits as its factorization.

4021444442129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 41.

The spelling of 4021444442129 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty-two thousand, one hundred twenty-nine".