1102012120 has 64 divisors (see below), whose sum is σ = 2716999200. Its totient is φ = 398945280.

The previous prime is 1102012069. The next prime is 1102012129. The reversal of 1102012120 is 212102011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1102012097 and 1102012106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95292 + ... + 106228.

Almost surely, 2^1102012120 is an apocalyptic number.

1102012120 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 1102012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1358499600).

1102012120 is an abundant number, since it is smaller than the sum of its proper divisors (1614987080).

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

1102012120 is a wasteful number, since it uses less digits than its factorization.

1102012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11188 (or 11184 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1102012120 is about 33196.5678948894. The cubic root of 1102012120 is about 1032.9091476660.

Adding to 1102012120 its reverse (212102011), we get a palindrome (1314114131).

The spelling of 1102012120 in words is "one billion, one hundred two million, twelve thousand, one hundred twenty".