121313151 has 12 divisors (see below), whose sum is σ = 175685640. Its totient is φ = 80665200.

The previous prime is 121313149. The next prime is 121313167. The reversal of 121313151 is 151313121.

It is not a de Polignac number, because 121313151 - 2¹ = 121313149 is a prime.

It is a super-4 number, since 4×121313151⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13825 + ... + 20826.

It is an arithmetic number, because the mean of its divisors is an integer number (14640470).

Almost surely, 2^121313151 is an apocalyptic number.

121313151 is a deficient number, since it is larger than the sum of its proper divisors (54372489).

121313151 is a wasteful number, since it uses less digits than its factorization.

121313151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35046 (or 35043 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 121313151 is about 11014.2249386872. The cubic root of 121313151 is about 495.0350633258.

Adding to 121313151 its reverse (151313121), we get a palindrome (272626272).

The spelling of 121313151 in words is "one hundred twenty-one million, three hundred thirteen thousand, one hundred fifty-one".