42231101291 has 2 divisors, whose sum is σ = 42231101292. Its totient is φ = 42231101290.

The previous prime is 42231101281. The next prime is 42231101323. The reversal of 42231101291 is 19210113224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42231101291 - 2²⁶ = 42163992427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42231101291.

It is not a weakly prime, because it can be changed into another prime (42231101281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21115550645 + 21115550646.

It is an arithmetic number, because the mean of its divisors is an integer number (21115550646).

Almost surely, 2^42231101291 is an apocalyptic number.

42231101291 is a deficient number, since it is larger than the sum of its proper divisors (1).

42231101291 is an equidigital number, since it uses as much as digits as its factorization.

42231101291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 42231101291 in words is "forty-two billion, two hundred thirty-one million, one hundred one thousand, two hundred ninety-one".