221025441453330 has 32 divisors (see below), whose sum is σ = 530470770470784. Its totient is φ = 58939038722816.

The previous prime is 221025441453281. The next prime is 221025441453457. The reversal of 221025441453330 is 33354144520122.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 65770647 + ... + 69049466.

It is an arithmetic number, because the mean of its divisors is an integer number (16577211577212).

Almost surely, 2^{221025441453330} is an apocalyptic number.

221025441453330 is an abundant number, since it is smaller than the sum of its proper divisors (309445329017454).

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

221025441453330 is a wasteful number, since it uses less digits than its factorization.

221025441453330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134874770.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 221025441453330 its reverse (33354144520122), we get a palindrome (254379585973452).

The spelling of 221025441453330 in words is "two hundred twenty-one trillion, twenty-five billion, four hundred forty-one million, four hundred fifty-three thousand, three hundred thirty".