2011222221212 has 12 divisors (see below), whose sum is σ = 3520975646496. Its totient is φ = 1005229179360.

The previous prime is 2011222221193. The next prime is 2011222221289. The reversal of 2011222221212 is 2121222221102.

It is a congruent number.

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, 95470964 + ... + 95492027.

It is an arithmetic number, because the mean of its divisors is an integer number (293414637208).

Almost surely, 2^{2011222221212} is an apocalyptic number.

It is an amenable number.

2011222221212 is a deficient number, since it is larger than the sum of its proper divisors (1509753425284).

2011222221212 is a wasteful number, since it uses less digits than its factorization.

2011222221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190965628 (or 190965626 counting only the distinct ones).

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

Adding to 2011222221212 its reverse (2121222221102), we get a palindrome (4132444442314).

The spelling of 2011222221212 in words is "two trillion, eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".