151223201 has 2 divisors, whose sum is σ = 151223202. Its totient is φ = 151223200.

The previous prime is 151223179. The next prime is 151223227. The reversal of 151223201 is 102322151.

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., 137710225 + 13512976 = 11735^2 + 3676^2 .

It is a cyclic number.

It is not a de Polignac number, because 151223201 - 2¹⁰ = 151222177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151223201.

It is not a weakly prime, because it can be changed into another prime (151223231) 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, 75611600 + 75611601.

It is an arithmetic number, because the mean of its divisors is an integer number (75611601).

Almost surely, 2^151223201 is an apocalyptic number.

It is an amenable number.

151223201 is a deficient number, since it is larger than the sum of its proper divisors (1).

151223201 is an equidigital number, since it uses as much as digits as its factorization.

151223201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 151223201 is about 12297.2842936967. The cubic root of 151223201 is about 532.7696486741.

Adding to 151223201 its reverse (102322151), we get a palindrome (253545352).

The spelling of 151223201 in words is "one hundred fifty-one million, two hundred twenty-three thousand, two hundred one".