221312322030 has 32 divisors (see below), whose sum is σ = 531161942688. Its totient is φ = 59015244800.

The previous prime is 221312322019. The next prime is 221312322047. The reversal of 221312322030 is 30223213122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221312321988 and 221312322006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2491990 + ... + 2579270.

It is an arithmetic number, because the mean of its divisors is an integer number (16598810709).

Almost surely, 2^221312322030 is an apocalyptic number.

221312322030 is an abundant number, since it is smaller than the sum of its proper divisors (309849620658).

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

221312322030 is a wasteful number, since it uses less digits than its factorization.

221312322030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171812.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221312322030 its reverse (30223213122), we get a palindrome (251535535152).

The spelling of 221312322030 in words is "two hundred twenty-one billion, three hundred twelve million, three hundred twenty-two thousand, thirty".