11012211210120 has 256 divisors, whose sum is σ = 34212229632000. Its totient is φ = 2833810790400.

The previous prime is 11012211210041. The next prime is 11012211210137. The reversal of 11012211210120 is 2101211221011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11012211210120.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 185301771 + ... + 185361189.

It is an arithmetic number, because the mean of its divisors is an integer number (133641522000).

Almost surely, 2^{11012211210120} is an apocalyptic number.

11012211210120 is a gapful number since it is divisible by the number (10) 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 11012211210120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17106114816000).

11012211210120 is an abundant number, since it is smaller than the sum of its proper divisors (23200018421880).

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

11012211210120 is a wasteful number, since it uses less digits than its factorization.

11012211210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59884 (or 59880 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11012211210120 its reverse (2101211221011), we get a palindrome (13113422431131).

The spelling of 11012211210120 in words is "eleven trillion, twelve billion, two hundred eleven million, two hundred ten thousand, one hundred twenty".