11011221222220 has 24 divisors (see below), whose sum is σ = 23197916877408. Its totient is φ = 4390326144000.

The previous prime is 11011221222143. The next prime is 11011221222277. The reversal of 11011221222220 is 2222212211011.

It is a super-2 number, since 2×11011221222220² (a number of 27 digits) contains 22 as substring.

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, 885140181 + ... + 885152620.

It is an arithmetic number, because the mean of its divisors is an integer number (966579869892).

Almost surely, 2^{11011221222220} is an apocalyptic number.

11011221222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011221222220 is an abundant number, since it is smaller than the sum of its proper divisors (12186695655188).

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

11011221222220 is a wasteful number, since it uses less digits than its factorization.

11011221222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770293121 (or 1770293119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11011221222220 its reverse (2222212211011), we get a palindrome (13233433433231).

The spelling of 11011221222220 in words is "eleven trillion, eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty".