3112121101 has 4 divisors (see below), whose sum is σ = 3118931452. Its totient is φ = 3105310752.

The previous prime is 3112121083. The next prime is 3112121107. The reversal of 3112121101 is 1011212113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2587756900 + 524364201 = 50870^2 + 22899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3112121101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112121107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3404490 + ... + 3405403.

It is an arithmetic number, because the mean of its divisors is an integer number (779732863).

Almost surely, 2^3112121101 is an apocalyptic number.

It is an amenable number.

3112121101 is a deficient number, since it is larger than the sum of its proper divisors (6810351).

3112121101 is an equidigital number, since it uses as much as digits as its factorization.

3112121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810350.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 3112121101 is about 55786.3881336657. The cubic root of 3112121101 is about 1459.9976701345.

Adding to 3112121101 its reverse (1011212113), we get a palindrome (4123333214).

The spelling of 3112121101 in words is "three billion, one hundred twelve million, one hundred twenty-one thousand, one hundred one".