11001202101220 has 24 divisors (see below), whose sum is σ = 23106461023800. Its totient is φ = 4399731009792.

The previous prime is 11001202101187. The next prime is 11001202101287. The reversal of 11001202101220 is 2210120210011.

It can be written as a sum of positive squares in 4 ways, for example, as 1264405793764 + 9736796307456 = 1124458^2 + 3120384^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11001202101220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46744105 + ... + 46978864.

It is an arithmetic number, because the mean of its divisors is an integer number (962769209325).

Almost surely, 2^{11001202101220} is an apocalyptic number.

11001202101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001202101220 is an abundant number, since it is smaller than the sum of its proper divisors (12105258922580).

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

11001202101220 is a wasteful number, since it uses less digits than its factorization.

11001202101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93728847 (or 93728845 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11001202101220 its reverse (2210120210011), we get a palindrome (13211322311231).

The spelling of 11001202101220 in words is "eleven trillion, one billion, two hundred two million, one hundred one thousand, two hundred twenty".