216822842501 has 8 divisors (see below), whose sum is σ = 229614744024. Its totient is φ = 204035120640.

The previous prime is 216822842479. The next prime is 216822842513. The reversal of 216822842501 is 105248228612.

It can be written as a sum of positive squares in 4 ways, for example, as 87143630401 + 129679212100 = 295201^2 + 360110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216822842501 - 2⁶ = 216822842437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216822842581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937790 + ... + 1145903.

It is an arithmetic number, because the mean of its divisors is an integer number (28701843003).

Almost surely, 2^216822842501 is an apocalyptic number.

It is an amenable number.

216822842501 is a deficient number, since it is larger than the sum of its proper divisors (12791901523).

216822842501 is a wasteful number, since it uses less digits than its factorization.

216822842501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089831.

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 216822842501 in words is "two hundred sixteen billion, eight hundred twenty-two million, eight hundred forty-two thousand, five hundred one".