4002024140021 has 2 divisors, whose sum is σ = 4002024140022. Its totient is φ = 4002024140020.

The previous prime is 4002024140017. The next prime is 4002024140123. The reversal of 4002024140021 is 1200414202004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3994345999396 + 7678140625 = 1998586^2 + 87625^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002024140021 - 2² = 4002024140017 is a prime.

It is a super-2 number, since 2×4002024140021² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4002024139975 and 4002024140002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4002023140021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001012070010 + 2001012070011.

It is an arithmetic number, because the mean of its divisors is an integer number (2001012070011).

Almost surely, 2^{4002024140021} is an apocalyptic number.

It is an amenable number.

4002024140021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002024140021 is an equidigital number, since it uses as much as digits as its factorization.

4002024140021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 4002024140021 its reverse (1200414202004), we get a palindrome (5202438342025).

The spelling of 4002024140021 in words is "four trillion, two billion, twenty-four million, one hundred forty thousand, twenty-one".