42002211425081 has 2 divisors, whose sum is σ = 42002211425082. Its totient is φ = 42002211425080.

The previous prime is 42002211425029. The next prime is 42002211425131. The reversal of 42002211425081 is 18052411220024.

42002211425081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40610540569600 + 1391670855481 = 6372640^2 + 1179691^2 .

It is a cyclic number.

It is not a de Polignac number, because 42002211425081 - 2³⁰ = 42001137683257 is a prime.

It is a super-2 number, since 2×42002211425081² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42002211445081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001105712540 + 21001105712541.

It is an arithmetic number, because the mean of its divisors is an integer number (21001105712541).

Almost surely, 2^{42002211425081} is an apocalyptic number.

It is an amenable number.

42002211425081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42002211425081 is an equidigital number, since it uses as much as digits as its factorization.

42002211425081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10240, while the sum is 32.

The spelling of 42002211425081 in words is "forty-two trillion, two billion, two hundred eleven million, four hundred twenty-five thousand, eighty-one".