151121205 has 12 divisors (see below), whose sum is σ = 261943500. Its totient is φ = 80597952.

The previous prime is 151121189. The next prime is 151121227. The reversal of 151121205 is 502121151.

It can be written as a sum of positive squares in 2 ways, for example, as 117874449 + 33246756 = 10857^2 + 5766^2 .

It is not a de Polignac number, because 151121205 - 2⁴ = 151121189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1679080 + ... + 1679169.

It is an arithmetic number, because the mean of its divisors is an integer number (21828625).

Almost surely, 2^151121205 is an apocalyptic number.

151121205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151121205 is a deficient number, since it is larger than the sum of its proper divisors (110822295).

151121205 is a wasteful number, since it uses less digits than its factorization.

151121205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358260 (or 3358257 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 151121205 is about 12293.1364996896. The cubic root of 151121205 is about 532.6498421136.

Adding to 151121205 its reverse (502121151), we get a palindrome (653242356).

The spelling of 151121205 in words is "one hundred fifty-one million, one hundred twenty-one thousand, two hundred five".