1111022013220 has 96 divisors (see below), whose sum is σ = 2712141250560. Its totient is φ = 374397275520.

The previous prime is 1111022013217. The next prime is 1111022013313. The reversal of 1111022013220 is 223102201111.

It is a junction number, because it is equal to n+sod(n) for n = 1111022013194 and 1111022013203.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68442505 + ... + 68458735.

It is an arithmetic number, because the mean of its divisors is an integer number (28251471360).

Almost surely, 2^{1111022013220} is an apocalyptic number.

1111022013220 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 1111022013220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356070625280).

1111022013220 is an abundant number, since it is smaller than the sum of its proper divisors (1601119237340).

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

1111022013220 is a wasteful number, since it uses less digits than its factorization.

1111022013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24593 (or 24591 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1111022013220 its reverse (223102201111), we get a palindrome (1334124214331).

The spelling of 1111022013220 in words is "one trillion, one hundred eleven billion, twenty-two million, thirteen thousand, two hundred twenty".