2221022211212 has 48 divisors (see below), whose sum is σ = 4446480369408. Its totient is φ = 950916542400.

The previous prime is 2221022211209. The next prime is 2221022211227. The reversal of 2221022211212 is 2121122201222.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177009923 + ... + 177022469.

It is an arithmetic number, because the mean of its divisors is an integer number (92635007696).

Almost surely, 2^{2221022211212} is an apocalyptic number.

It is an amenable number.

2221022211212 is an abundant number, since it is smaller than the sum of its proper divisors (2225458158196).

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

2221022211212 is a wasteful number, since it uses less digits than its factorization.

2221022211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18366 (or 18364 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2221022211212 its reverse (2121122201222), we get a palindrome (4342144412434).

The spelling of 2221022211212 in words is "two trillion, two hundred twenty-one billion, twenty-two million, two hundred eleven thousand, two hundred twelve".