2100345321 has 16 divisors (see below), whose sum is σ = 2860012800. Its totient is φ = 1370578560.

The previous prime is 2100345319. The next prime is 2100345361. The reversal of 2100345321 is 1235430012.

It is not a de Polignac number, because 2100345321 - 2¹ = 2100345319 is a prime.

It is a super-2 number, since 2×2100345321² = 8822900934893186082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2100345361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53205 + ... + 83853.

It is an arithmetic number, because the mean of its divisors is an integer number (178750800).

Almost surely, 2^2100345321 is an apocalyptic number.

It is an amenable number.

2100345321 is a deficient number, since it is larger than the sum of its proper divisors (759667479).

2100345321 is a wasteful number, since it uses less digits than its factorization.

2100345321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31136.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2100345321 is about 45829.5245556835. The cubic root of 2100345321 is about 1280.6493533432.

Adding to 2100345321 its reverse (1235430012), we get a palindrome (3335775333).

The spelling of 2100345321 in words is "two billion, one hundred million, three hundred forty-five thousand, three hundred twenty-one".