2122545345 has 8 divisors (see below), whose sum is σ = 3396072576. Its totient is φ = 1132024176.

The previous prime is 2122545323. The next prime is 2122545349. The reversal of 2122545345 is 5435452212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2122545345 - 2¹² = 2122541249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2122545349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70751497 + ... + 70751526.

It is an arithmetic number, because the mean of its divisors is an integer number (424509072).

Almost surely, 2^2122545345 is an apocalyptic number.

It is an amenable number.

2122545345 is a deficient number, since it is larger than the sum of its proper divisors (1273527231).

2122545345 is a wasteful number, since it uses less digits than its factorization.

2122545345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141503031.

The product of its digits is 48000, while the sum is 33.

The square root of 2122545345 is about 46071.0901216804. The cubic root of 2122545345 is about 1285.1455764256.

Adding to 2122545345 its reverse (5435452212), we get a palindrome (7557997557).

The spelling of 2122545345 in words is "two billion, one hundred twenty-two million, five hundred forty-five thousand, three hundred forty-five".