221430530154 has 16 divisors (see below), whose sum is σ = 446093624448. Its totient is φ = 73271416032.

The previous prime is 221430530141. The next prime is 221430530173. The reversal of 221430530154 is 451035034122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134689282 + ... + 134690925.

It is an arithmetic number, because the mean of its divisors is an integer number (27880851528).

Almost surely, 2^221430530154 is an apocalyptic number.

221430530154 is an abundant number, since it is smaller than the sum of its proper divisors (224663094294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221430530154 is a wasteful number, since it uses less digits than its factorization.

221430530154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269380349.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 221430530154 its reverse (451035034122), we get a palindrome (672465564276).

The spelling of 221430530154 in words is "two hundred twenty-one billion, four hundred thirty million, five hundred thirty thousand, one hundred fifty-four".