11011111111210 has 24 divisors (see below), whose sum is σ = 23055918368580. Its totient is φ = 3775238095104.

The previous prime is 11011111111181. The next prime is 11011111111249. The reversal of 11011111111210 is 1211111111011.

It can be written as a sum of positive squares in 2 ways, for example, as 9874885159489 + 1136225951721 = 3142433^2 + 1065939^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11235827175 + ... + 11235828154.

Almost surely, 2^{11011111111210} is an apocalyptic number.

11011111111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11011111111210 is an abundant number, since it is smaller than the sum of its proper divisors (12044807257370).

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

11011111111210 is a wasteful number, since it uses less digits than its factorization.

11011111111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22471655350 (or 22471655343 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 11011111111210 its reverse (1211111111011), we get a palindrome (12222222222221).

The spelling of 11011111111210 in words is "eleven trillion, eleven billion, one hundred eleven million, one hundred eleven thousand, two hundred ten".