4253021121 has 16 divisors (see below), whose sum is σ = 6005587968. Its totient is φ = 2667974400.

The previous prime is 4253021119. The next prime is 4253021141. The reversal of 4253021121 is 1211203524.

It is not a de Polignac number, because 4253021121 - 2¹ = 4253021119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4253021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412651 + ... + 422831.

It is an arithmetic number, because the mean of its divisors is an integer number (375349248).

Almost surely, 2^4253021121 is an apocalyptic number.

It is an amenable number.

4253021121 is a deficient number, since it is larger than the sum of its proper divisors (1752566847).

4253021121 is a wasteful number, since it uses less digits than its factorization.

4253021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18392.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4253021121 is about 65215.1908760528. The cubic root of 4253021121 is about 1620.1896238177.

Adding to 4253021121 its reverse (1211203524), we get a palindrome (5464224645).

The spelling of 4253021121 in words is "four billion, two hundred fifty-three million, twenty-one thousand, one hundred twenty-one".