3121151122 has 4 divisors (see below), whose sum is σ = 4681726686. Its totient is φ = 1560575560.

The previous prime is 3121151119. The next prime is 3121151123. The reversal of 3121151122 is 2211511213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2211511213 = 19 ⋅116395327.

It can be written as a sum of positive squares in only one way, i.e., 2432561041 + 688590081 = 49321^2 + 26241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3121151122.

It is not an unprimeable number, because it can be changed into a prime (3121151123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780287779 + ... + 780287782.

Almost surely, 2^3121151122 is an apocalyptic number.

3121151122 is a deficient number, since it is larger than the sum of its proper divisors (1560575564).

3121151122 is a wasteful number, since it uses less digits than its factorization.

3121151122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560575563.

The product of its digits is 120, while the sum is 19.

The square root of 3121151122 is about 55867.2634196450. The cubic root of 3121151122 is about 1461.4083991821.

Adding to 3121151122 its reverse (2211511213), we get a palindrome (5332662335).

The spelling of 3121151122 in words is "three billion, one hundred twenty-one million, one hundred fifty-one thousand, one hundred twenty-two".