2121000331 has 8 divisors (see below), whose sum is σ = 2142307440. Its totient is φ = 2099720928.

The previous prime is 2121000319. The next prime is 2121000379. The reversal of 2121000331 is 1330001212.

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 2121000331 - 2¹⁷ = 2120869259 is a prime.

It is a super-2 number, since 2×2121000331² = 8997284808204219122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121000311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169105 + ... + 181213.

It is an arithmetic number, because the mean of its divisors is an integer number (267788430).

Almost surely, 2^2121000331 is an apocalyptic number.

2121000331 is a deficient number, since it is larger than the sum of its proper divisors (21307109).

2121000331 is a wasteful number, since it uses less digits than its factorization.

2121000331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13853.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2121000331 is about 46054.3193522605. The cubic root of 2121000331 is about 1284.8336789081.

Adding to 2121000331 its reverse (1330001212), we get a palindrome (3451001543).

The spelling of 2121000331 in words is "two billion, one hundred twenty-one million, three hundred thirty-one", and thus it is an aban number.