11212321108 has 12 divisors (see below), whose sum is σ = 19624234420. Its totient is φ = 5605396992.

The previous prime is 11212321091. The next prime is 11212321147. The reversal of 11212321108 is 80112321211.

It can be written as a sum of positive squares in 2 ways, for example, as 1832011204 + 9380309904 = 42802^2 + 96852^2 .

It is a super-2 number, since 2×11212321108² (a number of 21 digits) contains 22 as substring.

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, 157191 + ... + 217102.

Almost surely, 2^11212321108 is an apocalyptic number.

It is an amenable number.

11212321108 is a deficient number, since it is larger than the sum of its proper divisors (8411913312).

11212321108 is a wasteful number, since it uses less digits than its factorization.

11212321108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381786 (or 381784 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 11212321108 its reverse (80112321211), we get a palindrome (91324642319).

The spelling of 11212321108 in words is "eleven billion, two hundred twelve million, three hundred twenty-one thousand, one hundred eight".