121121081 has 8 divisors (see below), whose sum is σ = 125515200. Its totient is φ = 116741520.

The previous prime is 121121003. The next prime is 121121083. The reversal of 121121081 is 180121121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121121081 - 2¹⁰ = 121120057 is a prime.

It is a super-2 number, since 2×121121081² = 29340632525217122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121083) 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, 14990 + ... + 21608.

It is an arithmetic number, because the mean of its divisors is an integer number (15689400).

Almost surely, 2^121121081 is an apocalyptic number.

It is an amenable number.

121121081 is a deficient number, since it is larger than the sum of its proper divisors (4394119).

121121081 is an equidigital number, since it uses as much as digits as its factorization.

121121081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279.

The product of its (nonzero) digits is 32, while the sum is 17.

The square root of 121121081 is about 11005.5023056651. The cubic root of 121121081 is about 494.7736692740.

The spelling of 121121081 in words is "one hundred twenty-one million, one hundred twenty-one thousand, eighty-one".