4006033025021 has 2 divisors, whose sum is σ = 4006033025022. Its totient is φ = 4006033025020.

The previous prime is 4006033024937. The next prime is 4006033025081. The reversal of 4006033025021 is 1205203306004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2892193416025 + 1113839608996 = 1700645^2 + 1055386^2 .

It is a cyclic number.

It is not a de Polignac number, because 4006033025021 - 2¹⁸ = 4006032762877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4006033025081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2003016512510 + 2003016512511.

It is an arithmetic number, because the mean of its divisors is an integer number (2003016512511).

Almost surely, 2^{4006033025021} is an apocalyptic number.

It is an amenable number.

4006033025021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4006033025021 is an equidigital number, since it uses as much as digits as its factorization.

4006033025021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 4006033025021 in words is "four trillion, six billion, thirty-three million, twenty-five thousand, twenty-one".