2171930112 has 420 divisors, whose sum is σ = 7419970404. Its totient is φ = 629544960.

The previous prime is 2171930107. The next prime is 2171930143. The reversal of 2171930112 is 2110391712.

It is a super-2 number, since 2×2171930112² = 9434560822824665088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 94431733 + ... + 94431755.

Almost surely, 2^2171930112 is an apocalyptic number.

2171930112 is a gapful number since it is divisible by the number (22) 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 2171930112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3709985202).

2171930112 is an abundant number, since it is smaller than the sum of its proper divisors (5248040292).

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

2171930112 is an frugal number, since it uses more digits than its factorization.

2171930112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 2171930112 is about 46603.9709896056. The cubic root of 2171930112 is about 1295.0363206422.

The spelling of 2171930112 in words is "two billion, one hundred seventy-one million, nine hundred thirty thousand, one hundred twelve".