11221111102212 has 36 divisors (see below), whose sum is σ = 30943063949616. Its totient is φ = 3400336697520.

The previous prime is 11221111102189. The next prime is 11221111102217. The reversal of 11221111102212 is 21220111112211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×11221111102212² (a number of 27 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (11221111102217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14168069178 + ... + 14168069969.

It is an arithmetic number, because the mean of its divisors is an integer number (859529554156).

Almost surely, 2^{11221111102212} is an apocalyptic number.

11221111102212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11221111102212 is an abundant number, since it is smaller than the sum of its proper divisors (19721952847404).

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

11221111102212 is a wasteful number, since it uses less digits than its factorization.

11221111102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28336139168 (or 28336139163 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11221111102212 its reverse (21220111112211), we get a palindrome (32441222214423).

Subtracting 11221111102212 from its reverse (21220111112211), we obtain a palindrome (9999000009999).

The spelling of 11221111102212 in words is "eleven trillion, two hundred twenty-one billion, one hundred eleven million, one hundred two thousand, two hundred twelve".