2145242212 has 12 divisors (see below), whose sum is σ = 3775875516. Its totient is φ = 1066420640.

The previous prime is 2145242207. The next prime is 2145242237. The reversal of 2145242212 is 2122425412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1125334116 + 1019908096 = 33546^2 + 31936^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1549339 + ... + 1550722.

It is an arithmetic number, because the mean of its divisors is an integer number (314656293).

Almost surely, 2^2145242212 is an apocalyptic number.

It is an amenable number.

2145242212 is a deficient number, since it is larger than the sum of its proper divisors (1630633304).

2145242212 is a wasteful number, since it uses less digits than its factorization.

2145242212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100238 (or 3100236 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 2145242212 is about 46316.7595153202. The cubic root of 2145242212 is about 1289.7101309720.

Adding to 2145242212 its reverse (2122425412), we get a palindrome (4267667624).

The spelling of 2145242212 in words is "two billion, one hundred forty-five million, two hundred forty-two thousand, two hundred twelve".