151121227 has 2 divisors, whose sum is σ = 151121228. Its totient is φ = 151121226.

The previous prime is 151121189. The next prime is 151121239. The reversal of 151121227 is 722121151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151121227 - 2¹⁵ = 151088459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 151121198 and 151121207.

It is not a weakly prime, because it can be changed into another prime (151121297) by changing a digit.

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 as a sum of consecutive naturals, namely, 75560613 + 75560614.

It is an arithmetic number, because the mean of its divisors is an integer number (75560614).

Almost surely, 2^151121227 is an apocalyptic number.

151121227 is a deficient number, since it is larger than the sum of its proper divisors (1).

151121227 is an equidigital number, since it uses as much as digits as its factorization.

151121227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 280, while the sum is 22.

The square root of 151121227 is about 12293.1373944978. The cubic root of 151121227 is about 532.6498679611.

Adding to 151121227 its reverse (722121151), we get a palindrome (873242378).

The spelling of 151121227 in words is "one hundred fifty-one million, one hundred twenty-one thousand, two hundred twenty-seven".