1111022120 has 64 divisors (see below), whose sum is σ = 2695835520. Its totient is φ = 409653504.

The previous prime is 1111022117. The next prime is 1111022123. The reversal of 1111022120 is 212201111.

It is an interprime number because it is at equal distance from previous prime (1111022117) and next prime (1111022123).

It is a super-2 number, since 2×1111022120² = 2468740302258588800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1111022123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635087 + ... + 636833.

It is an arithmetic number, because the mean of its divisors is an integer number (42122430).

Almost surely, 2^1111022120 is an apocalyptic number.

1111022120 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 1111022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347917760).

1111022120 is an abundant number, since it is smaller than the sum of its proper divisors (1584813400).

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

1111022120 is a wasteful number, since it uses less digits than its factorization.

1111022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1111022120 is about 33331.9984399376. The cubic root of 1111022120 is about 1035.7165163057.

Adding to 1111022120 its reverse (212201111), we get a palindrome (1323223231).

The spelling of 1111022120 in words is "one billion, one hundred eleven million, twenty-two thousand, one hundred twenty".