11021221112212 has 12 divisors (see below), whose sum is σ = 19369914359796. Its totient is φ = 5486959866560.

The previous prime is 11021221112207. The next prime is 11021221112243. The reversal of 11021221112212 is 21221112212011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7806357768196 + 3214863344016 = 2793986^2 + 1793004^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11021221112212.

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, 5912671339 + ... + 5912673202.

It is an arithmetic number, because the mean of its divisors is an integer number (1614159529983).

Almost surely, 2^{11021221112212} is an apocalyptic number.

It is an amenable number.

11021221112212 is a deficient number, since it is larger than the sum of its proper divisors (8348693247584).

11021221112212 is a wasteful number, since it uses less digits than its factorization.

11021221112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11825344778 (or 11825344776 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11021221112212 its reverse (21221112212011), we get a palindrome (32242333324223).

The spelling of 11021221112212 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twelve".