12021633154 has 8 divisors (see below), whose sum is σ = 18083534220. Its totient is φ = 5993788416.

The previous prime is 12021633121. The next prime is 12021633199. The reversal of 12021633154 is 45133612021.

12021633154 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 12017202129 + 4431025 = 109623^2 + 2105^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8513199 + ... + 8514610.

Almost surely, 2^12021633154 is an apocalyptic number.

12021633154 is a deficient number, since it is larger than the sum of its proper divisors (6061901066).

12021633154 is a wasteful number, since it uses less digits than its factorization.

12021633154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17028164.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 12021633154 in words is "twelve billion, twenty-one million, six hundred thirty-three thousand, one hundred fifty-four".