44216221391 has 2 divisors, whose sum is σ = 44216221392. Its totient is φ = 44216221390.

The previous prime is 44216221367. The next prime is 44216221411. The reversal of 44216221391 is 19312261244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44216221391 - 2⁶ = 44216221327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44216221891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22108110695 + 22108110696.

It is an arithmetic number, because the mean of its divisors is an integer number (22108110696).

Almost surely, 2^44216221391 is an apocalyptic number.

44216221391 is a deficient number, since it is larger than the sum of its proper divisors (1).

44216221391 is an equidigital number, since it uses as much as digits as its factorization.

44216221391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The spelling of 44216221391 in words is "forty-four billion, two hundred sixteen million, two hundred twenty-one thousand, three hundred ninety-one".