216221818883041 has 16 divisors (see below), whose sum is σ = 217066372905600. Its totient is φ = 215378940349440.

The previous prime is 216221818883033. The next prime is 216221818883069. The reversal of 216221818883041 is 140388818122612.

It is a cyclic number.

It is not a de Polignac number, because 216221818883041 - 2³ = 216221818883033 is a prime.

It is a super-2 number, since 2×216221818883041² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216221818883141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3940089895 + ... + 3940144771.

It is an arithmetic number, because the mean of its divisors is an integer number (13566648306600).

Almost surely, 2^{216221818883041} is an apocalyptic number.

It is an amenable number.

216221818883041 is a deficient number, since it is larger than the sum of its proper divisors (844554022559).

216221818883041 is a wasteful number, since it uses less digits than its factorization.

216221818883041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69864.

The product of its (nonzero) digits is 2359296, while the sum is 55.

The spelling of 216221818883041 in words is "two hundred sixteen trillion, two hundred twenty-one billion, eight hundred eighteen million, eight hundred eighty-three thousand, forty-one".