1111200211220 has 72 divisors (see below), whose sum is σ = 2566230654624. Its totient is φ = 403870104000.

The previous prime is 1111200211207. The next prime is 1111200211243. The reversal of 1111200211220 is 221120021111.

It is a super-2 number, since 2×1111200211220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111200211195 and 1111200211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4752455 + ... + 4980785.

Almost surely, 2^{1111200211220} is an apocalyptic number.

1111200211220 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 1111200211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283115327312).

1111200211220 is an abundant number, since it is smaller than the sum of its proper divisors (1455030443404).

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

1111200211220 is a wasteful number, since it uses less digits than its factorization.

1111200211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230373 (or 230360 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1111200211220 its reverse (221120021111), we get a palindrome (1332320232331).

The spelling of 1111200211220 in words is "one trillion, one hundred eleven billion, two hundred million, two hundred eleven thousand, two hundred twenty".