2111247320 has 320 divisors, whose sum is σ = 6352668000. Its totient is φ = 625895424.

The previous prime is 2111247311. The next prime is 2111247329. The reversal of 2111247320 is 237421112.

It is an interprime number because it is at equal distance from previous prime (2111247311) and next prime (2111247329).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111247329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 23721836 + ... + 23721924.

Almost surely, 2^2111247320 is an apocalyptic number.

2111247320 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 2111247320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3176334000).

2111247320 is an abundant number, since it is smaller than the sum of its proper divisors (4241420680).

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

2111247320 is a wasteful number, since it uses less digits than its factorization.

2111247320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2111247320 is about 45948.3113944354. The cubic root of 2111247320 is about 1282.8612993093.

Adding to 2111247320 its reverse (237421112), we get a palindrome (2348668432).

The spelling of 2111247320 in words is "two billion, one hundred eleven million, two hundred forty-seven thousand, three hundred twenty".