2121135266 has 8 divisors (see below), whose sum is σ = 3181912860. Its totient is φ = 1060497648.

The previous prime is 2121135257. The next prime is 2121135283. The reversal of 2121135266 is 6625311212.

It can be written as a sum of positive squares in 2 ways, for example, as 2109473041 + 11662225 = 45929^2 + 3415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 20480 + ... + 68276.

Almost surely, 2^2121135266 is an apocalyptic number.

2121135266 is a deficient number, since it is larger than the sum of its proper divisors (1060777594).

2121135266 is a wasteful number, since it uses less digits than its factorization.

2121135266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69988.

The product of its digits is 4320, while the sum is 29.

The square root of 2121135266 is about 46055.7842838443. The cubic root of 2121135266 is about 1284.8609247558.

Adding to 2121135266 its reverse (6625311212), we get a palindrome (8746446478).

The spelling of 2121135266 in words is "two billion, one hundred twenty-one million, one hundred thirty-five thousand, two hundred sixty-six".