121050505 has 8 divisors (see below), whose sum is σ = 149946624. Its totient is φ = 93716400.

The previous prime is 121050499. The next prime is 121050511. The reversal of 121050505 is 505050121.

It is an interprime number because it is at equal distance from previous prime (121050499) and next prime (121050511).

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

It is not a de Polignac number, because 121050505 - 2³ = 121050497 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian 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, 390331 + ... + 390640.

It is an arithmetic number, because the mean of its divisors is an integer number (18743328).

Almost surely, 2^121050505 is an apocalyptic number.

It is an amenable number.

121050505 is a deficient number, since it is larger than the sum of its proper divisors (28896119).

121050505 is an equidigital number, since it uses as much as digits as its factorization.

121050505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781007.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 121050505 is about 11002.2954423157. The cubic root of 121050505 is about 494.6775507708.

It can be divided in two parts, 1210 and 50505, that added together give a palindrome (51715).

The spelling of 121050505 in words is "one hundred twenty-one million, fifty thousand, five hundred five".