11212112122210 has 32 divisors (see below), whose sum is σ = 20589170580720. Its totient is φ = 4395210344448.

The previous prime is 11212112122207. The next prime is 11212112122223. The reversal of 11212112122210 is 1222121121211.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 214379186121 + 10997732936089 = 463011^2 + 3316283^2 .

It is a super-2 number, since 2×11212112122210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55642257 + ... + 55843396.

Almost surely, 2^{11212112122210} is an apocalyptic number.

11212112122210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11212112122210 is a deficient number, since it is larger than the sum of its proper divisors (9377058458510).

11212112122210 is a wasteful number, since it uses less digits than its factorization.

11212112122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111485862.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11212112122210 its reverse (1222121121211), we get a palindrome (12434233243421).

The spelling of 11212112122210 in words is "eleven trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-two thousand, two hundred ten".