11001222211220 has 24 divisors (see below), whose sum is σ = 23125238488800. Its totient is φ = 4396170437792.

The previous prime is 11001222211207. The next prime is 11001222211241. The reversal of 11001222211220 is 2211222210011.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 269882030 + ... + 269922789.

It is an arithmetic number, because the mean of its divisors is an integer number (963551603700).

Almost surely, 2^{11001222211220} is an apocalyptic number.

11001222211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001222211220 is an abundant number, since it is smaller than the sum of its proper divisors (12124016277580).

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

11001222211220 is a wasteful number, since it uses less digits than its factorization.

11001222211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539805847 (or 539805845 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11001222211220 its reverse (2211222210011), we get a palindrome (13212444421231).

The spelling of 11001222211220 in words is "eleven trillion, one billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twenty".