42021055999999 has 2 divisors, whose sum is σ = 42021056000000. Its totient is φ = 42021055999998.

The previous prime is 42021055999991. The next prime is 42021056000003. The reversal of 42021055999999 is 99999955012024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42021055999999 - 2³ = 42021055999991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42021055999991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010527999999 + 21010528000000.

It is an arithmetic number, because the mean of its divisors is an integer number (21010528000000).

Almost surely, 2^{42021055999999} is an apocalyptic number.

42021055999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021055999999 is an equidigital number, since it uses as much as digits as its factorization.

42021055999999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 212576400, while the sum is 73.

The spelling of 42021055999999 in words is "forty-two trillion, twenty-one billion, fifty-five million, nine hundred ninety-nine thousand, nine hundred ninety-nine".