2120720712 has 128 divisors (see below), whose sum is σ = 5975424000. Its totient is φ = 621561600.

The previous prime is 2120720687. The next prime is 2120720717. The reversal of 2120720712 is 2170270212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2120720717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1943287 + ... + 1944377.

It is an arithmetic number, because the mean of its divisors is an integer number (46683000).

Almost surely, 2^2120720712 is an apocalyptic number.

2120720712 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 2120720712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2987712000).

2120720712 is an abundant number, since it is smaller than the sum of its proper divisors (3854703288).

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

2120720712 is a wasteful number, since it uses less digits than its factorization.

2120720712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 2120720712 is about 46051.2835000285. The cubic root of 2120720712 is about 1284.7772150323. Note that the first 3 decimals are identical.

Adding to 2120720712 its reverse (2170270212), we get a palindrome (4290990924).

The spelling of 2120720712 in words is "two billion, one hundred twenty million, seven hundred twenty thousand, seven hundred twelve".