2143555212 has 12 divisors (see below), whose sum is σ = 5001628856. Its totient is φ = 714518400.

The previous prime is 2143555201. The next prime is 2143555217. The reversal of 2143555212 is 2125553412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2143555212.

It is not an unprimeable number, because it can be changed into a prime (2143555217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89314789 + ... + 89314812.

Almost surely, 2^2143555212 is an apocalyptic number.

It is an amenable number.

2143555212 is an abundant number, since it is smaller than the sum of its proper divisors (2858073644).

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

2143555212 is a wasteful number, since it uses less digits than its factorization.

2143555212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178629608 (or 178629606 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 2143555212 is about 46298.5443831661. The cubic root of 2143555212 is about 1289.3719700010.

The spelling of 2143555212 in words is "two billion, one hundred forty-three million, five hundred fifty-five thousand, two hundred twelve".