2211012009 has 6 divisors (see below), whose sum is σ = 3193684026. Its totient is φ = 1474008000.

The previous prime is 2211011983. The next prime is 2211012019. The reversal of 2211012009 is 9002101122.

2211012009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1161446400 + 1049565609 = 34080^2 + 32397^2 .

It is not a de Polignac number, because 2211012009 - 2⁸ = 2211011753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211011982 and 2211012000.

It is not an unprimeable number, because it can be changed into a prime (2211012019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122833992 + ... + 122834009.

It is an arithmetic number, because the mean of its divisors is an integer number (532280671).

Almost surely, 2^2211012009 is an apocalyptic number.

It is an amenable number.

2211012009 is a deficient number, since it is larger than the sum of its proper divisors (982672017).

2211012009 is a wasteful number, since it uses less digits than its factorization.

2211012009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245668007 (or 245668004 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 2211012009 is about 47021.3994793860. The cubic root of 2211012009 is about 1302.7578551363.

The spelling of 2211012009 in words is "two billion, two hundred eleven million, twelve thousand, nine".