2112154320 has 160 divisors (see below), whose sum is σ = 6656038272. Its totient is φ = 554008576.

The previous prime is 2112154313. The next prime is 2112154337. The reversal of 2112154320 is 234512112.

It is a super-2 number, since 2×2112154320² = 8922391742989324800, which contains 22 as substring.

It is a congruent number.

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, 5983264 + ... + 5983616.

Almost surely, 2^2112154320 is an apocalyptic number.

2112154320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112154320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3328019136).

2112154320 is an abundant number, since it is smaller than the sum of its proper divisors (4543883952).

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

2112154320 is a wasteful number, since it uses less digits than its factorization.

2112154320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2112154320 is about 45958.1801206271. The cubic root of 2112154320 is about 1283.0449803975.

Adding to 2112154320 its reverse (234512112), we get a palindrome (2346666432).

The spelling of 2112154320 in words is "two billion, one hundred twelve million, one hundred fifty-four thousand, three hundred twenty".