2121740267 has 8 divisors (see below), whose sum is σ = 2269710576. Its totient is φ = 1976343552.

The previous prime is 2121740221. The next prime is 2121740273. The reversal of 2121740267 is 7620471212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121740267 - 2¹⁸ = 2121478123 is a prime.

It is a super-3 number, since 3×2121740267³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121740207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641693 + ... + 644990.

It is an arithmetic number, because the mean of its divisors is an integer number (283713822).

Almost surely, 2^2121740267 is an apocalyptic number.

2121740267 is a deficient number, since it is larger than the sum of its proper divisors (147970309).

2121740267 is a wasteful number, since it uses less digits than its factorization.

2121740267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286797.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 2121740267 is about 46062.3519482017. The cubic root of 2121740267 is about 1284.9830713350.

The spelling of 2121740267 in words is "two billion, one hundred twenty-one million, seven hundred forty thousand, two hundred sixty-seven".