121025505 has 8 divisors (see below), whose sum is σ = 193640832. Its totient is φ = 64546928.

The previous prime is 121025503. The next prime is 121025507. The reversal of 121025505 is 505520121.

It is an interprime number because it is at equal distance from previous prime (121025503) and next prime (121025507).

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 121025505 - 2¹ = 121025503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121025501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4034169 + ... + 4034198.

It is an arithmetic number, because the mean of its divisors is an integer number (24205104).

Almost surely, 2^121025505 is an apocalyptic number.

121025505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121025505 is a deficient number, since it is larger than the sum of its proper divisors (72615327).

121025505 is an equidigital number, since it uses as much as digits as its factorization.

121025505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8068375.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 121025505 is about 11001.1592570965. The cubic root of 121025505 is about 494.6434939386.

Adding to 121025505 its reverse (505520121), we get a palindrome (626545626).

The spelling of 121025505 in words is "one hundred twenty-one million, twenty-five thousand, five hundred five".