2121140122 has 16 divisors (see below), whose sum is σ = 3227023080. Its totient is φ = 1045481472.

The previous prime is 2121140117. The next prime is 2121140141. The reversal of 2121140122 is 2210411212.

It can be written as a sum of positive squares in 4 ways, for example, as 1997285481 + 123854641 = 44691^2 + 11129^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121140096 and 2121140105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451578 + ... + 456250.

Almost surely, 2^2121140122 is an apocalyptic number.

2121140122 is a deficient number, since it is larger than the sum of its proper divisors (1105882958).

2121140122 is a wasteful number, since it uses less digits than its factorization.

2121140122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2121140122 is about 46055.8370024908. The cubic root of 2121140122 is about 1284.8619052496.

Adding to 2121140122 its reverse (2210411212), we get a palindrome (4331551334).

The spelling of 2121140122 in words is "two billion, one hundred twenty-one million, one hundred forty thousand, one hundred twenty-two".