40221234191 has 2 divisors, whose sum is σ = 40221234192. Its totient is φ = 40221234190.

The previous prime is 40221234113. The next prime is 40221234223. The reversal of 40221234191 is 19143212204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40221234191 - 2²⁶ = 40154125327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40221231191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110617095 + 20110617096.

It is an arithmetic number, because the mean of its divisors is an integer number (20110617096).

Almost surely, 2^40221234191 is an apocalyptic number.

40221234191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221234191 is an equidigital number, since it uses as much as digits as its factorization.

40221234191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 40221234191 its reverse (19143212204), we get a palindrome (59364446395).

The spelling of 40221234191 in words is "forty billion, two hundred twenty-one million, two hundred thirty-four thousand, one hundred ninety-one".