11212111012122 has 24 divisors (see below), whose sum is σ = 24293977262100. Its totient is φ = 3737205711360.

The previous prime is 11212111012073. The next prime is 11212111012163. The reversal of 11212111012122 is 22121011121211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11032488467361 + 179622544761 = 3321519^2 + 423819^2 .

It is a super-2 number, since 2×11212111012122² (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 a junction number, because it is equal to n+sod(n) for n = 11212111012095 and 11212111012104.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 13298497 + ... + 14116452.

Almost surely, 2^{11212111012122} is an apocalyptic number.

11212111012122 is an abundant number, since it is smaller than the sum of its proper divisors (13081866249978).

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

11212111012122 is a wasteful number, since it uses less digits than its factorization.

11212111012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27437678 (or 27437675 counting only the distinct ones).

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

Adding to 11212111012122 its reverse (22121011121211), we get a palindrome (33333122133333).

The spelling of 11212111012122 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, twelve thousand, one hundred twenty-two".