121055115 has 16 divisors (see below), whose sum is σ = 193939200. Its totient is φ = 64479072.

The previous prime is 121055107. The next prime is 121055117. The reversal of 121055115 is 511550121.

It is not a de Polignac number, because 121055115 - 2³ = 121055107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121055091 and 121055100.

It is not an unprimeable number, because it can be changed into a prime (121055117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7776 + ... + 17394.

It is an arithmetic number, because the mean of its divisors is an integer number (12121200).

Almost surely, 2^121055115 is an apocalyptic number.

121055115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121055115 is a deficient number, since it is larger than the sum of its proper divisors (72884085).

121055115 is an equidigital number, since it uses as much as digits as its factorization.

121055115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10466.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 121055115 is about 11002.5049420575. The cubic root of 121055115 is about 494.6838303386.

The spelling of 121055115 in words is "one hundred twenty-one million, fifty-five thousand, one hundred fifteen".