2111820273 has 12 divisors (see below), whose sum is σ = 3059463108. Its totient is φ = 1403700480.

The previous prime is 2111820247. The next prime is 2111820283. The reversal of 2111820273 is 3720281112.

2111820273 is a `hidden beast` number, since 211 + 182 + 0 + 273 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 490711104 + 1621109169 = 22152^2 + 40263^2 .

It is not a de Polignac number, because 2111820273 - 2⁵ = 2111820241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111820203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345108 + ... + 351173.

It is an arithmetic number, because the mean of its divisors is an integer number (254955259).

Almost surely, 2^2111820273 is an apocalyptic number.

It is an amenable number.

2111820273 is a deficient number, since it is larger than the sum of its proper divisors (947642835).

2111820273 is a wasteful number, since it uses less digits than its factorization.

2111820273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696624 (or 696621 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 2111820273 is about 45954.5457272727. The cubic root of 2111820273 is about 1282.9773369935.

The spelling of 2111820273 in words is "two billion, one hundred eleven million, eight hundred twenty thousand, two hundred seventy-three".