2112721152 has 36 divisors (see below), whose sum is σ = 5622921360. Its totient is φ = 704240128.

The previous prime is 2112721151. The next prime is 2112721199. The reversal of 2112721152 is 2511272112.

It is a happy number.

It is a super-2 number, since 2×2112721152² = 8927181332216414208, which contains 22 as substring.

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 (2112721151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1374702 + ... + 1376237.

It is an arithmetic number, because the mean of its divisors is an integer number (156192260).

Almost surely, 2^2112721152 is an apocalyptic number.

It is an amenable number.

2112721152 is an abundant number, since it is smaller than the sum of its proper divisors (3510200208).

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

2112721152 is an equidigital number, since it uses as much as digits as its factorization.

2112721152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750958 (or 2750944 counting only the distinct ones).

The product of its digits is 560, while the sum is 24.

The square root of 2112721152 is about 45964.3465307623. The cubic root of 2112721152 is about 1283.1597456708.

Adding to 2112721152 its reverse (2511272112), we get a palindrome (4623993264).

The spelling of 2112721152 in words is "two billion, one hundred twelve million, seven hundred twenty-one thousand, one hundred fifty-two".