216002121232 has 20 divisors (see below), whose sum is σ = 432935287020. Its totient is φ = 104276885888.

The previous prime is 216002121229. The next prime is 216002121301. The reversal of 216002121232 is 232121200612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37178009856 + 178824111376 = 192816^2 + 422876^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 232760443 + ... + 232761370.

It is an arithmetic number, because the mean of its divisors is an integer number (21646764351).

Almost surely, 2^216002121232 is an apocalyptic number.

It is an amenable number.

216002121232 is an abundant number, since it is smaller than the sum of its proper divisors (216933165788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216002121232 is a wasteful number, since it uses less digits than its factorization.

216002121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465521850 (or 465521844 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 216002121232 its reverse (232121200612), we get a palindrome (448123321844).

The spelling of 216002121232 in words is "two hundred sixteen billion, two million, one hundred twenty-one thousand, two hundred thirty-two".