11212119990 has 192 divisors, whose sum is σ = 32728250880. Its totient is φ = 2649231360.

The previous prime is 11212119979. The next prime is 11212120033. The reversal of 11212119990 is 9991121211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1751716 + ... + 1758104.

It is an arithmetic number, because the mean of its divisors is an integer number (170459640).

Almost surely, 2^11212119990 is an apocalyptic number.

11212119990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212119990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16364125440).

11212119990 is an abundant number, since it is smaller than the sum of its proper divisors (21516130890).

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

11212119990 is a wasteful number, since it uses less digits than its factorization.

11212119990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487 (or 6484 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 11212119990 in words is "eleven billion, two hundred twelve million, one hundred nineteen thousand, nine hundred ninety".