2131121122 has 16 divisors (see below), whose sum is σ = 3645085752. Its totient is φ = 925735680.

The previous prime is 2131121119. The next prime is 2131121129. The reversal of 2131121122 is 2211211312.

It can be written as a sum of positive squares in 4 ways, for example, as 1989249201 + 141871921 = 44601^2 + 11911^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2131121096 and 2131121105.

It is not an unprimeable number, because it can be changed into a prime (2131121129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2410329 + ... + 2411212.

Almost surely, 2^2131121122 is an apocalyptic number.

2131121122 is a deficient number, since it is larger than the sum of its proper divisors (1513964630).

2131121122 is a wasteful number, since it uses less digits than its factorization.

2131121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4821573.

The product of its digits is 48, while the sum is 16.

The square root of 2131121122 is about 46164.0674334487. The cubic root of 2131121122 is about 1286.8740533775.

Adding to 2131121122 its reverse (2211211312), we get a palindrome (4342332434).

The spelling of 2131121122 in words is "two billion, one hundred thirty-one million, one hundred twenty-one thousand, one hundred twenty-two".