11220121222210 has 8 divisors (see below), whose sum is σ = 20196218199996. Its totient is φ = 4488048488880.

The previous prime is 11220121222181. The next prime is 11220121222213. The reversal of 11220121222210 is 1222212102211.

It can be written as a sum of positive squares in 2 ways, for example, as 10120167050841 + 1099954171369 = 3181221^2 + 1048787^2 .

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

It is a super-2 number, since 2×11220121222210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11220121222213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561006061101 + ... + 561006061120.

Almost surely, 2^{11220121222210} is an apocalyptic number.

11220121222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11220121222210 is a deficient number, since it is larger than the sum of its proper divisors (8976096977786).

11220121222210 is a wasteful number, since it uses less digits than its factorization.

11220121222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122012122228.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11220121222210 its reverse (1222212102211), we get a palindrome (12442333324421).

The spelling of 11220121222210 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred ten".