11101222120212 has 288 divisors, whose sum is σ = 33715753623552. Its totient is φ = 3013139098368.

The previous prime is 11101222120211. The next prime is 11101222120223. The reversal of 11101222120212 is 21202122210111.

11101222120212 is a `hidden beast` number, since 1 + 110 + 1 + 222 + 120 + 212 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101222120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2039538363 + ... + 2039543805.

Almost surely, 2^{11101222120212} is an apocalyptic number.

11101222120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11101222120212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16857876811776).

11101222120212 is an abundant number, since it is smaller than the sum of its proper divisors (22614531503340).

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

11101222120212 is a wasteful number, since it uses less digits than its factorization.

11101222120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10627 (or 10622 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11101222120212 its reverse (21202122210111), we get a palindrome (32303344330323).

The spelling of 11101222120212 in words is "eleven trillion, one hundred one billion, two hundred twenty-two million, one hundred twenty thousand, two hundred twelve".