2112120330 has 64 divisors (see below), whose sum is σ = 5219424000. Its totient is φ = 546670080.

The previous prime is 2112120317. The next prime is 2112120347. The reversal of 2112120330 is 330212112.

It is a super-2 number, since 2×2112120330² = 8922104576798617800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240456 + ... + 249084.

It is an arithmetic number, because the mean of its divisors is an integer number (81553500).

Almost surely, 2^2112120330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112120330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2609712000).

2112120330 is an abundant number, since it is smaller than the sum of its proper divisors (3107303670).

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

2112120330 is a wasteful number, since it uses less digits than its factorization.

2112120330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8879.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2112120330 is about 45957.8103264287. The cubic root of 2112120330 is about 1283.0380978617.

Adding to 2112120330 its reverse (330212112), we get a palindrome (2442332442).

The spelling of 2112120330 in words is "two billion, one hundred twelve million, one hundred twenty thousand, three hundred thirty".