121355163154 has 8 divisors (see below), whose sum is σ = 182036587788. Its totient is φ = 60676300560.

The previous prime is 121355163103. The next prime is 121355163157. The reversal of 121355163154 is 451361553121.

It can be written as a sum of positive squares in 2 ways, for example, as 121010058225 + 345104929 = 347865^2 + 18577^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121355163157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517357 + ... + 714400.

Almost surely, 2^121355163154 is an apocalyptic number.

121355163154 is a deficient number, since it is larger than the sum of its proper divisors (60681424634).

121355163154 is a wasteful number, since it uses less digits than its factorization.

121355163154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281020.

The product of its digits is 54000, while the sum is 37.

The spelling of 121355163154 in words is "one hundred twenty-one billion, three hundred fifty-five million, one hundred sixty-three thousand, one hundred fifty-four".