2112620345 has 24 divisors (see below), whose sum is σ = 2937886848. Its totient is φ = 1446060800.

The previous prime is 2112620269. The next prime is 2112620347. The reversal of 2112620345 is 5430262112.

It is a happy number.

It is not a de Polignac number, because 2112620345 - 2¹⁰ = 2112619321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112620347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50561 + ... + 82350.

It is an arithmetic number, because the mean of its divisors is an integer number (122411952).

Almost surely, 2^2112620345 is an apocalyptic number.

It is an amenable number.

2112620345 is a deficient number, since it is larger than the sum of its proper divisors (825266503).

2112620345 is a wasteful number, since it uses less digits than its factorization.

2112620345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132961 (or 132944 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2112620345 is about 45963.2499394897. The cubic root of 2112620345 is about 1283.1393369921.

Adding to 2112620345 its reverse (5430262112), we get a palindrome (7542882457).

The spelling of 2112620345 in words is "two billion, one hundred twelve million, six hundred twenty thousand, three hundred forty-five".