11211212122110 has 1152 divisors, whose sum is σ = 41787430723584. Its totient is φ = 2047566366720.

The previous prime is 11211212122069. The next prime is 11211212122129. The reversal of 11211212122110 is 1122121211211.

It is a happy number.

11211212122110 is a `hidden beast` number, since 1 + 121 + 121 + 212 + 211 + 0 = 666.

11211212122110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 1096660459 + ... + 1096670681.

It is an arithmetic number, because the mean of its divisors is an integer number (36273811392).

Almost surely, 2^{11211212122110} is an apocalyptic number.

11211212122110 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 11211212122110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20893715361792).

11211212122110 is an abundant number, since it is smaller than the sum of its proper divisors (30576218601474).

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

11211212122110 is a wasteful number, since it uses less digits than its factorization.

11211212122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10358 (or 10348 counting only the distinct ones).

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

Adding to 11211212122110 its reverse (1122121211211), we get a palindrome (12333333333321).

The spelling of 11211212122110 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred ten".