2221011212 has 12 divisors (see below), whose sum is σ = 4442022480. Its totient is φ = 951861936.

The previous prime is 2221011187. The next prime is 2221011227. The reversal of 2221011212 is 2121101222.

2221011212 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 39660887 + ... + 39660942.

It is an arithmetic number, because the mean of its divisors is an integer number (370168540).

Almost surely, 2^2221011212 is an apocalyptic number.

It is an amenable number.

2221011212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2221011212 is a wasteful number, since it uses less digits than its factorization.

2221011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79321840 (or 79321838 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2221011212 is about 47127.6056255779. The cubic root of 2221011212 is about 1304.7187900800.

Adding to 2221011212 its reverse (2121101222), we get a palindrome (4342112434).

The spelling of 2221011212 in words is "two billion, two hundred twenty-one million, eleven thousand, two hundred twelve".