11011021212220 has 24 divisors (see below), whose sum is σ = 23127126732864. Its totient is φ = 4403649973056.

The previous prime is 11011021212203. The next prime is 11011021212239. The reversal of 11011021212220 is 2221212011011.

It is a junction number, because it is equal to n+sod(n) for n = 11011021212194 and 11011021212203.

It is a congruent number.

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, 47287947 + ... + 47520226.

It is an arithmetic number, because the mean of its divisors is an integer number (963630280536).

Almost surely, 2^{11011021212220} is an apocalyptic number.

11011021212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011021212220 is an abundant number, since it is smaller than the sum of its proper divisors (12116105520644).

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

11011021212220 is a wasteful number, since it uses less digits than its factorization.

11011021212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94813989 (or 94813987 counting only the distinct ones).

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

Adding to 11011021212220 its reverse (2221212011011), we get a palindrome (13232233223231).

The spelling of 11011021212220 in words is "eleven trillion, eleven billion, twenty-one million, two hundred twelve thousand, two hundred twenty".