2179209012 has 12 divisors (see below), whose sum is σ = 5084821056. Its totient is φ = 726403000.

The previous prime is 2179208989. The next prime is 2179209013. The reversal of 2179209012 is 2109029712.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2179209012² = 9497903835964032288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179209013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90800364 + ... + 90800387.

It is an arithmetic number, because the mean of its divisors is an integer number (423735088).

Almost surely, 2^2179209012 is an apocalyptic number.

It is an amenable number.

2179209012 is an abundant number, since it is smaller than the sum of its proper divisors (2905612044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2179209012 is a wasteful number, since it uses less digits than its factorization.

2179209012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181600758 (or 181600756 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 2179209012 is about 46681.9988003941. The cubic root of 2179209012 is about 1296.4814145625.

The spelling of 2179209012 in words is "two billion, one hundred seventy-nine million, two hundred nine thousand, twelve".