11221011210220 has 144 divisors (see below), whose sum is σ = 28856380260960. Its totient is φ = 3644422419456.

The previous prime is 11221011210217. The next prime is 11221011210259. The reversal of 11221011210220 is 2201211012211.

11221011210220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11221011210220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221011210194 and 11221011210203.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 446737102 + ... + 446762218.

It is an arithmetic number, because the mean of its divisors is an integer number (200391529590).

Almost surely, 2^{11221011210220} is an apocalyptic number.

11221011210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221011210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14428190130480).

11221011210220 is an abundant number, since it is smaller than the sum of its proper divisors (17635369050740).

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

11221011210220 is a wasteful number, since it uses less digits than its factorization.

11221011210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49152 (or 49143 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11221011210220 its reverse (2201211012211), we get a palindrome (13422222222431).

The spelling of 11221011210220 in words is "eleven trillion, two hundred twenty-one billion, eleven million, two hundred ten thousand, two hundred twenty".