11221221222210 has 32 divisors (see below), whose sum is σ = 27178003702080. Its totient is φ = 2964873129408.

The previous prime is 11221221222203. The next prime is 11221221222439. The reversal of 11221221222210 is 1222212212211.

It is a super-3 number, since 3×11221221222210³ (a number of 40 digits) contains 333 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, 1715779792 + ... + 1715786331.

It is an arithmetic number, because the mean of its divisors is an integer number (849312615690).

Almost surely, 2^{11221221222210} is an apocalyptic number.

11221221222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221221222210 is an abundant number, since it is smaller than the sum of its proper divisors (15956782479870).

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

11221221222210 is a wasteful number, since it uses less digits than its factorization.

11221221222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431566242.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11221221222210 its reverse (1222212212211), we get a palindrome (12443433434421).

Subtracting from 11221221222210 its reverse (1222212212211), we obtain a palindrome (9999009009999).

The spelling of 11221221222210 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred ten".