11100120210 has 48 divisors (see below), whose sum is σ = 28875576600. Its totient is φ = 2958466560.

The previous prime is 11100120151. The next prime is 11100120217. The reversal of 11100120210 is 1202100111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8577167769 + 2522952441 = 92613^2 + 50229^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11100120192 and 11100120201.

It is not an unprimeable number, because it can be changed into a prime (11100120217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143770 + ... + 207050.

Almost surely, 2^11100120210 is an apocalyptic number.

11100120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11100120210 is an abundant number, since it is smaller than the sum of its proper divisors (17775456390).

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

11100120210 is a wasteful number, since it uses less digits than its factorization.

11100120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65243 (or 65240 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11100120210 its reverse (1202100111), we get a palindrome (12302220321).

The spelling of 11100120210 in words is "eleven billion, one hundred million, one hundred twenty thousand, two hundred ten".