2221022011212 has 72 divisors (see below), whose sum is σ = 5710144986000. Its totient is φ = 727698434688.

The previous prime is 2221022011207. The next prime is 2221022011253. The reversal of 2221022011212 is 2121102201222.

It is a happy number.

2221022011212 is a `hidden beast` number, since 2 + 221 + 0 + 220 + 11 + 212 = 666.

2221022011212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17431914 + ... + 17558862.

It is an arithmetic number, because the mean of its divisors is an integer number (79307569250).

Almost surely, 2^{2221022011212} is an apocalyptic number.

It is an amenable number.

2221022011212 is an abundant number, since it is smaller than the sum of its proper divisors (3489122974788).

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

2221022011212 is a wasteful number, since it uses less digits than its factorization.

2221022011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135255 (or 135250 counting only the distinct ones).

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

Adding to 2221022011212 its reverse (2121102201222), we get a palindrome (4342124212434).

The spelling of 2221022011212 in words is "two trillion, two hundred twenty-one billion, twenty-two million, eleven thousand, two hundred twelve".