2111545321 has 8 divisors (see below), whose sum is σ = 2119604864. Its totient is φ = 2103496560.

The previous prime is 2111545309. The next prime is 2111545343. The reversal of 2111545321 is 1235451112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111545321 is a prime.

It is a super-3 number, since 3×2111545321³ (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 (2111545351) 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, 787435 + ... + 790111.

It is an arithmetic number, because the mean of its divisors is an integer number (264950608).

Almost surely, 2^2111545321 is an apocalyptic number.

It is an amenable number.

2111545321 is a deficient number, since it is larger than the sum of its proper divisors (8059543).

2111545321 is a wasteful number, since it uses less digits than its factorization.

2111545321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391.

The product of its digits is 1200, while the sum is 25.

The square root of 2111545321 is about 45951.5540651238. The cubic root of 2111545321 is about 1282.9216547780.

Adding to 2111545321 its reverse (1235451112), we get a palindrome (3346996433).

The spelling of 2111545321 in words is "two billion, one hundred eleven million, five hundred forty-five thousand, three hundred twenty-one".