121145320 has 32 divisors (see below), whose sum is σ = 278380800. Its totient is φ = 47426368.

The previous prime is 121145317. The next prime is 121145341. The reversal of 121145320 is 23541121.

It is a super-3 number, since 3×121145320³ (a number of 25 digits) contains 333 as substring.

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, 30340 + ... + 34099.

It is an arithmetic number, because the mean of its divisors is an integer number (8699400).

Almost surely, 2^121145320 is an apocalyptic number.

121145320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121145320 is an abundant number, since it is smaller than the sum of its proper divisors (157235480).

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

121145320 is a wasteful number, since it uses less digits than its factorization.

121145320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64497 (or 64493 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121145320 is about 11006.6034724614. The cubic root of 121145320 is about 494.8066721142.

Adding to 121145320 its reverse (23541121), we get a palindrome (144686441).

The spelling of 121145320 in words is "one hundred twenty-one million, one hundred forty-five thousand, three hundred twenty".