40221232213 has 2 divisors, whose sum is σ = 40221232214. Its totient is φ = 40221232212.

The previous prime is 40221232187. The next prime is 40221232291. The reversal of 40221232213 is 31223212204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26522402449 + 13698829764 = 162857^2 + 117042^2 .

It is a cyclic number.

It is not a de Polignac number, because 40221232213 - 2²⁵ = 40187677781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40221235213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110616106 + 20110616107.

It is an arithmetic number, because the mean of its divisors is an integer number (20110616107).

Almost surely, 2^40221232213 is an apocalyptic number.

It is an amenable number.

40221232213 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221232213 is an equidigital number, since it uses as much as digits as its factorization.

40221232213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40221232213 its reverse (31223212204), we get a palindrome (71444444417).

The spelling of 40221232213 in words is "forty billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred thirteen".