40221223841 has 2 divisors, whose sum is σ = 40221223842. Its totient is φ = 40221223840.

The previous prime is 40221223817. The next prime is 40221223843. The reversal of 40221223841 is 14832212204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31139896225 + 9081327616 = 176465^2 + 95296^2 .

It is a cyclic number.

It is not a de Polignac number, because 40221223841 - 2¹⁰ = 40221222817 is a prime.

Together with 40221223843, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40221223843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110611920 + 20110611921.

It is an arithmetic number, because the mean of its divisors is an integer number (20110611921).

Almost surely, 2^40221223841 is an apocalyptic number.

It is an amenable number.

40221223841 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221223841 is an equidigital number, since it uses as much as digits as its factorization.

40221223841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 40221223841 in words is "forty billion, two hundred twenty-one million, two hundred twenty-three thousand, eight hundred forty-one".