1135220120 has 32 divisors (see below), whose sum is σ = 2557217520. Its totient is φ = 453559680.

The previous prime is 1135220117. The next prime is 1135220129. The reversal of 1135220120 is 210225311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135220129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19250 + ... + 51390.

Almost surely, 2^1135220120 is an apocalyptic number.

1135220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1135220120 is an abundant number, since it is smaller than the sum of its proper divisors (1421997400).

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

1135220120 is a wasteful number, since it uses less digits than its factorization.

1135220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33035 (or 33031 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1135220120 is about 33693.0277653998. The cubic root of 1135220120 is about 1043.1818602607.

Adding to 1135220120 its reverse (210225311), we get a palindrome (1345445431).

The spelling of 1135220120 in words is "one billion, one hundred thirty-five million, two hundred twenty thousand, one hundred twenty".