42235251211 has 2 divisors, whose sum is σ = 42235251212. Its totient is φ = 42235251210.

The previous prime is 42235251209. The next prime is 42235251241. The reversal of 42235251211 is 11215253224.

It is a happy number.

42235251211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42235251211 - 2¹ = 42235251209 is a prime.

Together with 42235251209, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42235251211.

It is not a weakly prime, because it can be changed into another prime (42235251241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21117625605 + 21117625606.

It is an arithmetic number, because the mean of its divisors is an integer number (21117625606).

Almost surely, 2^42235251211 is an apocalyptic number.

42235251211 is a deficient number, since it is larger than the sum of its proper divisors (1).

42235251211 is an equidigital number, since it uses as much as digits as its factorization.

42235251211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 28.

The spelling of 42235251211 in words is "forty-two billion, two hundred thirty-five million, two hundred fifty-one thousand, two hundred eleven".