121150005 has 16 divisors (see below), whose sum is σ = 195761664. Its totient is φ = 63972800.

The previous prime is 121149989. The next prime is 121150009. The reversal of 121150005 is 500051121.

It is not a de Polignac number, because 121150005 - 2⁴ = 121149989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121150009) 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, 38469 + ... + 41498.

It is an arithmetic number, because the mean of its divisors is an integer number (12235104).

Almost surely, 2^121150005 is an apocalyptic number.

121150005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121150005 is a deficient number, since it is larger than the sum of its proper divisors (74611659).

121150005 is a wasteful number, since it uses less digits than its factorization.

121150005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80076.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 121150005 is about 11006.8162971860. The cubic root of 121150005 is about 494.8130505127.

The spelling of 121150005 in words is "one hundred twenty-one million, one hundred fifty thousand, five".