8210220012 has 36 divisors (see below), whose sum is σ = 20784328656. Its totient is φ = 2732689440.

The previous prime is 8210219993. The next prime is 8210220019. The reversal of 8210220012 is 2100220128.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (8210220019) 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, 144064 + ... + 192807.

Almost surely, 2^8210220012 is an apocalyptic number.

It is an amenable number.

8210220012 is an abundant number, since it is smaller than the sum of its proper divisors (12574108644).

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

8210220012 is a wasteful number, since it uses less digits than its factorization.

8210220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337558 (or 337553 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 8210220012 is about 90610.2643854437. The cubic root of 8210220012 is about 2017.3670899116.

The spelling of 8210220012 in words is "eight billion, two hundred ten million, two hundred twenty thousand, twelve".