2177720012 has 12 divisors (see below), whose sum is σ = 4104164736. Its totient is φ = 1005101520.

The previous prime is 2177719987. The next prime is 2177720029. The reversal of 2177720012 is 2100277712.

2177720012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20939564 + ... + 20939667.

It is an arithmetic number, because the mean of its divisors is an integer number (342013728).

Almost surely, 2^2177720012 is an apocalyptic number.

It is an amenable number.

2177720012 is a deficient number, since it is larger than the sum of its proper divisors (1926444724).

2177720012 is a wasteful number, since it uses less digits than its factorization.

2177720012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41879248 (or 41879246 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 2177720012 is about 46666.0477435148. The cubic root of 2177720012 is about 1296.1860626464.

Adding to 2177720012 its reverse (2100277712), we get a palindrome (4277997724).

The spelling of 2177720012 in words is "two billion, one hundred seventy-seven million, seven hundred twenty thousand, twelve".