216770299922 has 30 divisors (see below), whose sum is σ = 359480191539. Its totient is φ = 97962405640.

The previous prime is 216770299903. The next prime is 216770299939. The reversal of 216770299922 is 229992077612.

It can be written as a sum of positive squares in 3 ways, for example, as 210213997081 + 6556302841 = 458491^2 + 80971^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=329219.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1253007428 + ... + 1253007600.

Almost surely, 2^216770299922 is an apocalyptic number.

216770299922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216770299922 is a deficient number, since it is larger than the sum of its proper divisors (142709891617).

216770299922 is an frugal number, since it uses more digits than its factorization.

216770299922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 216770299922 in words is "two hundred sixteen billion, seven hundred seventy million, two hundred ninety-nine thousand, nine hundred twenty-two".