11011121010 has 48 divisors (see below), whose sum is σ = 28711027800. Its totient is φ = 2927877120.

The previous prime is 11011121003. The next prime is 11011121021. The reversal of 11011121010 is 1012111011.

It can be written as a sum of positive squares in 4 ways, for example, as 10760120361 + 251000649 = 103731^2 + 15843^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11011120983 and 11011121001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143871 + ... + 206690.

Almost surely, 2^11011121010 is an apocalyptic number.

11011121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11011121010 is an abundant number, since it is smaller than the sum of its proper divisors (17699906790).

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

11011121010 is a wasteful number, since it uses less digits than its factorization.

11011121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350923 (or 350920 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11011121010 its reverse (1012111011), we get a palindrome (12023232021).

Subtracting from 11011121010 its reverse (1012111011), we obtain a palindrome (9999009999).

The spelling of 11011121010 in words is "eleven billion, eleven million, one hundred twenty-one thousand, ten".