121130320 has 40 divisors (see below), whose sum is σ = 296454240. Its totient is φ = 45901440.

The previous prime is 121130311. The next prime is 121130371. The reversal of 121130320 is 23031121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 121130320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38326 + ... + 41365.

It is an arithmetic number, because the mean of its divisors is an integer number (7411356).

Almost surely, 2^121130320 is an apocalyptic number.

121130320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121130320 is an abundant number, since it is smaller than the sum of its proper divisors (175323920).

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

121130320 is a wasteful number, since it uses less digits than its factorization.

121130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79723 (or 79717 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 121130320 is about 11005.9220422462. The cubic root of 121130320 is about 494.7862492413.

Adding to 121130320 its reverse (23031121), we get a palindrome (144161441).

The spelling of 121130320 in words is "one hundred twenty-one million, one hundred thirty thousand, three hundred twenty".