221434260511154 has 8 divisors (see below), whose sum is σ = 336355838751360. Its totient is φ = 109315647594036.

The previous prime is 221434260511147. The next prime is 221434260511199. The reversal of 221434260511154 is 451115062434122.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700741330574 + ... + 700741330889.

It is an arithmetic number, because the mean of its divisors is an integer number (42044479843920).

Almost surely, 2^{221434260511154} is an apocalyptic number.

221434260511154 is a deficient number, since it is larger than the sum of its proper divisors (114921578240206).

221434260511154 is a wasteful number, since it uses less digits than its factorization.

221434260511154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401482661544.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 221434260511154 in words is "two hundred twenty-one trillion, four hundred thirty-four billion, two hundred sixty million, five hundred eleven thousand, one hundred fifty-four".