1230211321 has 8 divisors (see below), whose sum is σ = 1252660640. Its totient is φ = 1207882368.

The previous prime is 1230211319. The next prime is 1230211343. The reversal of 1230211321 is 1231120321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1230211321 - 2¹ = 1230211319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230211295 and 1230211304.

It is not an unprimeable number, because it can be changed into a prime (1230211121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9336 + ... + 50473.

It is an arithmetic number, because the mean of its divisors is an integer number (156582580).

Almost surely, 2^1230211321 is an apocalyptic number.

It is an amenable number.

1230211321 is a deficient number, since it is larger than the sum of its proper divisors (22449319).

1230211321 is an equidigital number, since it uses as much as digits as its factorization.

1230211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60183.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1230211321 is about 35074.3684333731. The cubic root of 1230211321 is about 1071.5026260797.

Adding to 1230211321 its reverse (1231120321), we get a palindrome (2461331642).

The spelling of 1230211321 in words is "one billion, two hundred thirty million, two hundred eleven thousand, three hundred twenty-one".