1154854681221 has 8 divisors (see below), whose sum is σ = 1539869335200. Its totient is φ = 769871574032.

The previous prime is 1154854681207. The next prime is 1154854681247. The reversal of 1154854681221 is 1221864584511.

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 1154854681221 - 2¹³ = 1154854673029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154854685221) 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, 7801146 + ... + 7947803.

It is an arithmetic number, because the mean of its divisors is an integer number (192483666900).

Almost surely, 2^{1154854681221} is an apocalyptic number.

It is an amenable number.

1154854681221 is a deficient number, since it is larger than the sum of its proper divisors (385014653979).

1154854681221 is a wasteful number, since it uses less digits than its factorization.

1154854681221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15773395.

The product of its digits is 614400, while the sum is 48.

The spelling of 1154854681221 in words is "one trillion, one hundred fifty-four billion, eight hundred fifty-four million, six hundred eighty-one thousand, two hundred twenty-one".