222121020330 has 96 divisors (see below), whose sum is σ = 633789007488. Its totient is φ = 53525040000.

The previous prime is 222121020311. The next prime is 222121020343. The reversal of 222121020330 is 33020121222.

222121020330 is a `hidden beast` number, since 2 + 221 + 210 + 203 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 506421 + ... + 837080.

It is an arithmetic number, because the mean of its divisors is an integer number (6601968828).

Almost surely, 2^222121020330 is an apocalyptic number.

222121020330 is an abundant number, since it is smaller than the sum of its proper divisors (411667987158).

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

222121020330 is a wasteful number, since it uses less digits than its factorization.

222121020330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343692 (or 1343689 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 222121020330 its reverse (33020121222), we get a palindrome (255141141552).

The spelling of 222121020330 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty thousand, three hundred thirty".