212111123103330 has 128 divisors (see below), whose sum is σ = 557424843558912. Its totient is φ = 51228365760000.

The previous prime is 212111123103301. The next prime is 212111123103343. The reversal of 212111123103330 is 33301321111212.

It is a super-2 number, since 2×212111123103330² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212111123103330.

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 63 ways as a sum of consecutive naturals, for example, 2006845785 + ... + 2006951475.

It is an arithmetic number, because the mean of its divisors is an integer number (4354881590304).

Almost surely, 2^{212111123103330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212111123103330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278712421779456).

212111123103330 is an abundant number, since it is smaller than the sum of its proper divisors (345313720455582).

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

212111123103330 is a wasteful number, since it uses less digits than its factorization.

212111123103330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128424.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 212111123103330 its reverse (33301321111212), we get a palindrome (245412444214542).

The spelling of 212111123103330 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred twenty-three million, one hundred three thousand, three hundred thirty".