4026312121 has 32 divisors (see below), whose sum is σ = 4549860000. Its totient is φ = 3537451008.

The previous prime is 4026312083. The next prime is 4026312149. The reversal of 4026312121 is 1212136204.

It can be written as a sum of positive squares in 16 ways, for example, as 2417098896 + 1609213225 = 49164^2 + 40115^2 .

It is not a de Polignac number, because 4026312121 - 2⁹ = 4026311609 is a prime.

It is a super-2 number, since 2×4026312121² = 32422378591423037282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4026312092 and 4026312101.

It is not an unprimeable number, because it can be changed into a prime (4026312421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12863461 + ... + 12863773.

It is an arithmetic number, because the mean of its divisors is an integer number (142183125).

Almost surely, 2^4026312121 is an apocalyptic number.

It is an amenable number.

4026312121 is a deficient number, since it is larger than the sum of its proper divisors (523547879).

4026312121 is a wasteful number, since it uses less digits than its factorization.

4026312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4026312121 is about 63453.2278217586. The cubic root of 4026312121 is about 1590.8741051602.

Adding to 4026312121 its reverse (1212136204), we get a palindrome (5238448325).

The spelling of 4026312121 in words is "four billion, twenty-six million, three hundred twelve thousand, one hundred twenty-one".