2112621307 has 2 divisors, whose sum is σ = 2112621308. Its totient is φ = 2112621306.

The previous prime is 2112621299. The next prime is 2112621317. The reversal of 2112621307 is 7031262112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112621307 - 2³ = 2112621299 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112621317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056310653 + 1056310654.

It is an arithmetic number, because the mean of its divisors is an integer number (1056310654).

Almost surely, 2^2112621307 is an apocalyptic number.

2112621307 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112621307 is an equidigital number, since it uses as much as digits as its factorization.

2112621307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2112621307 is about 45963.2604043708. The cubic root of 2112621307 is about 1283.1395317549.

Adding to 2112621307 its reverse (7031262112), we get a palindrome (9143883419).

The spelling of 2112621307 in words is "two billion, one hundred twelve million, six hundred twenty-one thousand, three hundred seven".