121153530 has 16 divisors (see below), whose sum is σ = 290768544. Its totient is φ = 32307600.

The previous prime is 121153507. The next prime is 121153541. The reversal of 121153530 is 35351121.

It is a junction number, because it is equal to n+sod(n) for n = 121153497 and 121153506.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2019196 + ... + 2019255.

It is an arithmetic number, because the mean of its divisors is an integer number (18173034).

Almost surely, 2^121153530 is an apocalyptic number.

121153530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121153530 is an abundant number, since it is smaller than the sum of its proper divisors (169615014).

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

121153530 is a wasteful number, since it uses less digits than its factorization.

121153530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038461.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 121153530 is about 11006.9764240685. The cubic root of 121153530 is about 494.8178495195.

The spelling of 121153530 in words is "one hundred twenty-one million, one hundred fifty-three thousand, five hundred thirty".