216441205922 has 18 divisors (see below), whose sum is σ = 339414997467. Its totient is φ = 103508122036.

The previous prime is 216441205901. The next prime is 216441205957. The reversal of 216441205922 is 229502144612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 108220602961 + 108220602961 = 328969^2 + 328969^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=328969.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15125423 + ... + 15139725.

Almost surely, 2^216441205922 is an apocalyptic number.

216441205922 is a deficient number, since it is larger than the sum of its proper divisors (122973791545).

216441205922 is an frugal number, since it uses more digits than its factorization.

216441205922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28654 (or 14328 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 216441205922 in words is "two hundred sixteen billion, four hundred forty-one million, two hundred five thousand, nine hundred twenty-two".