229221371528 has 108 divisors (see below), whose sum is σ = 464495614695. Its totient is φ = 106031354400.

The previous prime is 229221371473. The next prime is 229221371537. The reversal of 229221371528 is 825173122922.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 114610685764 + 114610685764 = 338542^2 + 338542^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=338542.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1518022253 + ... + 1518022403.

Almost surely, 2^229221371528 is an apocalyptic number.

It is an amenable number.

229221371528 is an abundant number, since it is smaller than the sum of its proper divisors (235274243167).

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

229221371528 is an equidigital number, since it uses as much as digits as its factorization.

229221371528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 231 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The spelling of 229221371528 in words is "two hundred twenty-nine billion, two hundred twenty-one million, three hundred seventy-one thousand, five hundred twenty-eight".