221144234330 has 16 divisors (see below), whose sum is σ = 415366562304. Its totient is φ = 84611706960.

The previous prime is 221144234323. The next prime is 221144234369. The reversal of 221144234330 is 33432441122.

It is a junction number, because it is equal to n+sod(n) for n = 221144234293 and 221144234302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480748106 + ... + 480748565.

It is an arithmetic number, because the mean of its divisors is an integer number (25960410144).

Almost surely, 2^221144234330 is an apocalyptic number.

221144234330 is a deficient number, since it is larger than the sum of its proper divisors (194222327974).

221144234330 is a wasteful number, since it uses less digits than its factorization.

221144234330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961496701.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 221144234330 its reverse (33432441122), we get a palindrome (254576675452).

The spelling of 221144234330 in words is "two hundred twenty-one billion, one hundred forty-four million, two hundred thirty-four thousand, three hundred thirty".