121005151 has 8 divisors (see below), whose sum is σ = 124124000. Its totient is φ = 117923040.

The previous prime is 121005127. The next prime is 121005161. The reversal of 121005151 is 151500121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121005151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121005161) 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, 2451 + ... + 15748.

It is an arithmetic number, because the mean of its divisors is an integer number (15515500).

Almost surely, 2^121005151 is an apocalyptic number.

121005151 is a deficient number, since it is larger than the sum of its proper divisors (3118849).

121005151 is a wasteful number, since it uses less digits than its factorization.

121005151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18369.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 121005151 is about 11000.2341338719. The cubic root of 121005151 is about 494.6157627642.

Adding to 121005151 its reverse (151500121), we get a palindrome (272505272).

The spelling of 121005151 in words is "one hundred twenty-one million, five thousand, one hundred fifty-one".