151228312121 has 8 divisors (see below), whose sum is σ = 153056961288. Its totient is φ = 149406160000.

The previous prime is 151228312091. The next prime is 151228312127. The reversal of 151228312121 is 121213822151.

It can be written as a sum of positive squares in 4 ways, for example, as 48180250000 + 103048062121 = 219500^2 + 321011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 151228312121 - 2¹⁸ = 151228049977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151228312127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577420 + ... + 1670541.

It is an arithmetic number, because the mean of its divisors is an integer number (19132120161).

Almost surely, 2^151228312121 is an apocalyptic number.

It is an amenable number.

151228312121 is a deficient number, since it is larger than the sum of its proper divisors (1828649167).

151228312121 is a wasteful number, since it uses less digits than its factorization.

151228312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248523.

The product of its digits is 1920, while the sum is 29.

The spelling of 151228312121 in words is "one hundred fifty-one billion, two hundred twenty-eight million, three hundred twelve thousand, one hundred twenty-one".