1111302120 has 64 divisors (see below), whose sum is σ = 3345390720. Its totient is φ = 295326464.

The previous prime is 1111302119. The next prime is 1111302139. The reversal of 1111302120 is 212031111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1111302096 and 1111302105.

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, 19357 + ... + 50963.

It is an arithmetic number, because the mean of its divisors is an integer number (52271730).

Almost surely, 2^1111302120 is an apocalyptic number.

1111302120 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 1111302120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672695360).

1111302120 is an abundant number, since it is smaller than the sum of its proper divisors (2234088600).

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

1111302120 is a wasteful number, since it uses less digits than its factorization.

1111302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31914 (or 31910 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1111302120 is about 33336.1983435424. The cubic root of 1111302120 is about 1035.8035161535.

Adding to 1111302120 its reverse (212031111), we get a palindrome (1323333231).

The spelling of 1111302120 in words is "one billion, one hundred eleven million, three hundred two thousand, one hundred twenty".