4122312121 has 4 divisors (see below), whose sum is σ = 4125786192. Its totient is φ = 4118838052.

The previous prime is 4122312119. The next prime is 4122312137. The reversal of 4122312121 is 1212132214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1212132214 = 2 ⋅606066107.

It is a cyclic number.

It is not a de Polignac number, because 4122312121 - 2¹ = 4122312119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4122312101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1735255 + ... + 1737628.

It is an arithmetic number, because the mean of its divisors is an integer number (1031446548).

Almost surely, 2^4122312121 is an apocalyptic number.

It is an amenable number.

4122312121 is a deficient number, since it is larger than the sum of its proper divisors (3474071).

4122312121 is a wasteful number, since it uses less digits than its factorization.

4122312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474070.

The product of its digits is 192, while the sum is 19.

The square root of 4122312121 is about 64205.2343738421. The cubic root of 4122312121 is about 1603.4187473233.

Adding to 4122312121 its reverse (1212132214), we get a palindrome (5334444335).

The spelling of 4122312121 in words is "four billion, one hundred twenty-two million, three hundred twelve thousand, one hundred twenty-one".