11211212222212 has 12 divisors (see below), whose sum is σ = 19810103150656. Its totient is φ = 5551182750600.

The previous prime is 11211212222207. The next prime is 11211212222237. The reversal of 11211212222212 is 21222221211211.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13605839664 + ... + 13605840487.

Almost surely, 2^{11211212222212} is an apocalyptic number.

It is an amenable number.

11211212222212 is a deficient number, since it is larger than the sum of its proper divisors (8598890928444).

11211212222212 is a wasteful number, since it uses less digits than its factorization.

11211212222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27211680258 (or 27211680256 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 11211212222212 its reverse (21222221211211), we get a palindrome (32433433433423).

The spelling of 11211212222212 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twelve".