151113121 has 2 divisors, whose sum is σ = 151113122. Its totient is φ = 151113120.

The previous prime is 151113091. The next prime is 151113181. The reversal of 151113121 is 121311151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150798400 + 314721 = 12280^2 + 561^2 .

It is a cyclic number.

It is not a de Polignac number, because 151113121 - 2¹⁹ = 150588833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 151113095 and 151113104.

It is not a weakly prime, because it can be changed into another prime (151113181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75556560 + 75556561.

It is an arithmetic number, because the mean of its divisors is an integer number (75556561).

Almost surely, 2^151113121 is an apocalyptic number.

It is an amenable number.

151113121 is a deficient number, since it is larger than the sum of its proper divisors (1).

151113121 is an equidigital number, since it uses as much as digits as its factorization.

151113121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30, while the sum is 16.

The square root of 151113121 is about 12292.8076939323. The cubic root of 151113121 is about 532.6403441787.

Adding to 151113121 its reverse (121311151), we get a palindrome (272424272).

The spelling of 151113121 in words is "one hundred fifty-one million, one hundred thirteen thousand, one hundred twenty-one".