11111201210 has 8 divisors (see below), whose sum is σ = 20000162196. Its totient is φ = 4444480480.

The previous prime is 11111201209. The next prime is 11111201219. The reversal of 11111201210 is 1210211111.

It can be written as a sum of positive squares in 2 ways, for example, as 11020170529 + 91030681 = 104977^2 + 9541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11111201191 and 11111201200.

It is not an unprimeable number, because it can be changed into a prime (11111201219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555560051 + ... + 555560070.

Almost surely, 2^11111201210 is an apocalyptic number.

11111201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111201210 is a deficient number, since it is larger than the sum of its proper divisors (8888960986).

11111201210 is a wasteful number, since it uses less digits than its factorization.

11111201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111120128.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11111201210 its reverse (1210211111), we get a palindrome (12321412321).

Subtracting from 11111201210 its reverse (1210211111), we obtain a palindrome (9900990099).

The spelling of 11111201210 in words is "eleven billion, one hundred eleven million, two hundred one thousand, two hundred ten".