211221202330 has 16 divisors (see below), whose sum is σ = 380203898400. Its totient is φ = 84487206672.

The previous prime is 211221202327. The next prime is 211221202331. The reversal of 211221202330 is 33202122112.

211221202330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211221202330² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221202298 and 211221202307.

It is not an unprimeable number, because it can be changed into a prime (211221202331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828757 + ... + 1053223.

It is an arithmetic number, because the mean of its divisors is an integer number (23762743650).

Almost surely, 2^211221202330 is an apocalyptic number.

211221202330 is a deficient number, since it is larger than the sum of its proper divisors (168982696070).

211221202330 is a wasteful number, since it uses less digits than its factorization.

211221202330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318573.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211221202330 its reverse (33202122112), we get a palindrome (244423324442).

The spelling of 211221202330 in words is "two hundred eleven billion, two hundred twenty-one million, two hundred two thousand, three hundred thirty".