2011122221212 has 12 divisors (see below), whose sum is σ = 3790191878536. Its totient is φ = 928210255920.

The previous prime is 2011122221209. The next prime is 2011122221263. The reversal of 2011122221212 is 2121222211102.

It is a super-2 number, since 2×2011122221212² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2011122221212.

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, 19337713614 + ... + 19337713717.

Almost surely, 2^{2011122221212} is an apocalyptic number.

It is an amenable number.

2011122221212 is a deficient number, since it is larger than the sum of its proper divisors (1779069657324).

2011122221212 is a wasteful number, since it uses less digits than its factorization.

2011122221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38675427348 (or 38675427346 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2011122221212 its reverse (2121222211102), we get a palindrome (4132344432314).

The spelling of 2011122221212 in words is "two trillion, eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".