4200312121 has 32 divisors (see below), whose sum is σ = 4697510400. Its totient is φ = 3739115520.

The previous prime is 4200312119. The next prime is 4200312157. The reversal of 4200312121 is 1212130024.

It is a cyclic number.

It is not a de Polignac number, because 4200312121 - 2¹ = 4200312119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4200312095 and 4200312104.

It is not an unprimeable number, because it can be changed into a prime (4200312521) 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, 6240841 + ... + 6241513.

It is an arithmetic number, because the mean of its divisors is an integer number (146797200).

Almost surely, 2^4200312121 is an apocalyptic number.

It is an amenable number.

4200312121 is a deficient number, since it is larger than the sum of its proper divisors (497198279).

4200312121 is a wasteful number, since it uses less digits than its factorization.

4200312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 4200312121 is about 64809.8150051364. The cubic root of 4200312121 is about 1613.4686120951.

Adding to 4200312121 its reverse (1212130024), we get a palindrome (5412442145).

The spelling of 4200312121 in words is "four billion, two hundred million, three hundred twelve thousand, one hundred twenty-one".