243121251022151 has 8 divisors (see below), whose sum is σ = 243190868978880. Its totient is φ = 243051638065632.

The previous prime is 243121251022147. The next prime is 243121251022163. The reversal of 243121251022151 is 151220152121342.

It is a happy number.

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 243121251022151 - 2² = 243121251022147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121221022151) 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, 97114706 + ... + 99586688.

It is an arithmetic number, because the mean of its divisors is an integer number (30398858622360).

Almost surely, 2^{243121251022151} is an apocalyptic number.

243121251022151 is a deficient number, since it is larger than the sum of its proper divisors (69617956729).

243121251022151 is a wasteful number, since it uses less digits than its factorization.

243121251022151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500105.

The product of its (nonzero) digits is 9600, while the sum is 32.

The spelling of 243121251022151 in words is "two hundred forty-three trillion, one hundred twenty-one billion, two hundred fifty-one million, twenty-two thousand, one hundred fifty-one".