2122145252 has 6 divisors (see below), whose sum is σ = 3713754198. Its totient is φ = 1061072624.

The previous prime is 2122145237. The next prime is 2122145257. The reversal of 2122145252 is 2525412212.

It can be written as a sum of positive squares in only one way, i.e., 1785569536 + 336575716 = 42256^2 + 18346^2 .

It is a super-2 number, since 2×2122145252² = 9007000941172287008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2122145257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265268153 + ... + 265268160.

It is an arithmetic number, because the mean of its divisors is an integer number (618959033).

Almost surely, 2^2122145252 is an apocalyptic number.

It is an amenable number.

2122145252 is a deficient number, since it is larger than the sum of its proper divisors (1591608946).

2122145252 is a wasteful number, since it uses less digits than its factorization.

2122145252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530536317 (or 530536315 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 2122145252 is about 46066.7477905702. The cubic root of 2122145252 is about 1285.0648227429.

Adding to 2122145252 its reverse (2525412212), we get a palindrome (4647557464).

The spelling of 2122145252 in words is "two billion, one hundred twenty-two million, one hundred forty-five thousand, two hundred fifty-two".