4002422021971 has 2 divisors, whose sum is σ = 4002422021972. Its totient is φ = 4002422021970.

The previous prime is 4002422021947. The next prime is 4002422022029. The reversal of 4002422021971 is 1791202242004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4002422021971 - 2¹⁷ = 4002421890899 is a prime.

It is not a weakly prime, because it can be changed into another prime (4002422021371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001211010985 + 2001211010986.

It is an arithmetic number, because the mean of its divisors is an integer number (2001211010986).

Almost surely, 2^{4002422021971} is an apocalyptic number.

4002422021971 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002422021971 is an equidigital number, since it uses as much as digits as its factorization.

4002422021971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

Adding to 4002422021971 its reverse (1791202242004), we get a palindrome (5793624263975).

The spelling of 4002422021971 in words is "four trillion, two billion, four hundred twenty-two million, twenty-one thousand, nine hundred seventy-one".