11112210021220 has 192 divisors, whose sum is σ = 30362252046336. Its totient is φ = 3312573073920.

The previous prime is 11112210021203. The next prime is 11112210021259. The reversal of 11112210021220 is 2212001221111.

It is a junction number, because it is equal to n+sod(n) for n = 11112210021194 and 11112210021203.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 498808722 + ... + 498830998.

It is an arithmetic number, because the mean of its divisors is an integer number (158136729408).

Almost surely, 2^{11112210021220} is an apocalyptic number.

11112210021220 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 11112210021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15181126023168).

11112210021220 is an abundant number, since it is smaller than the sum of its proper divisors (19250042025116).

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

11112210021220 is a wasteful number, since it uses less digits than its factorization.

11112210021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36410 (or 36408 counting only the distinct ones).

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

Adding to 11112210021220 its reverse (2212001221111), we get a palindrome (13324211242331).

The spelling of 11112210021220 in words is "eleven trillion, one hundred twelve billion, two hundred ten million, twenty-one thousand, two hundred twenty".