151200121 has 4 divisors (see below), whose sum is σ = 151359732. Its totient is φ = 151040512.

The previous prime is 151200107. The next prime is 151200143. The reversal of 151200121 is 121002151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121002151 = 401 ⋅301751.

It can be written as a sum of positive squares in 2 ways, for example, as 99201600 + 51998521 = 9960^2 + 7211^2 .

It is a cyclic number.

It is not a de Polignac number, because 151200121 - 2⁵ = 151200089 is a prime.

It is a super-2 number, since 2×151200121² = 45722953180829282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151204121) 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 in 3 ways as a sum of consecutive naturals, for example, 78376 + ... + 80281.

It is an arithmetic number, because the mean of its divisors is an integer number (37839933).

Almost surely, 2^151200121 is an apocalyptic number.

It is an amenable number.

151200121 is a deficient number, since it is larger than the sum of its proper divisors (159611).

151200121 is an equidigital number, since it uses as much as digits as its factorization.

151200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159610.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 151200121 is about 12296.3458393134. The cubic root of 151200121 is about 532.7425431571.

Adding to 151200121 its reverse (121002151), we get a palindrome (272202272).

It can be divided in two parts, 151200 and 121, that added together give a square (151321 = 389²).

The spelling of 151200121 in words is "one hundred fifty-one million, two hundred thousand, one hundred twenty-one".