11010001221220 has 48 divisors (see below), whose sum is σ = 24718741826688. Its totient is φ = 4104699471360.

The previous prime is 11010001221217. The next prime is 11010001221277. The reversal of 11010001221220 is 2212210001011.

It is a self number, because there is not a number n which added to its sum of digits gives 11010001221220.

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, 157160886 + ... + 157230925.

It is an arithmetic number, because the mean of its divisors is an integer number (514973788056).

Almost surely, 2^{11010001221220} is an apocalyptic number.

11010001221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11010001221220 is an abundant number, since it is smaller than the sum of its proper divisors (13708740605468).

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

11010001221220 is a wasteful number, since it uses less digits than its factorization.

11010001221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314391940 (or 314391938 counting only the distinct ones).

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

Adding to 11010001221220 its reverse (2212210001011), we get a palindrome (13222211222231).

The spelling of 11010001221220 in words is "eleven trillion, ten billion, one million, two hundred twenty-one thousand, two hundred twenty".