11121011212220 has 48 divisors (see below), whose sum is σ = 28743536676288. Its totient is φ = 3519616734720.

The previous prime is 11121011212219. The next prime is 11121011212273. The reversal of 11121011212220 is 2221211012111.

It is a congruent number.

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, 3055221041 + ... + 3055224680.

It is an arithmetic number, because the mean of its divisors is an integer number (598823680756).

Almost surely, 2^{11121011212220} is an apocalyptic number.

11121011212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121011212220 is an abundant number, since it is smaller than the sum of its proper divisors (17622525464068).

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

11121011212220 is a wasteful number, since it uses less digits than its factorization.

11121011212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110445750 (or 6110445748 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11121011212220 its reverse (2221211012111), we get a palindrome (13342222224331).

The spelling of 11121011212220 in words is "eleven trillion, one hundred twenty-one billion, eleven million, two hundred twelve thousand, two hundred twenty".