1230221409 has 8 divisors (see below), whose sum is σ = 1640861760. Its totient is φ = 819864336.

The previous prime is 1230221407. The next prime is 1230221431. The reversal of 1230221409 is 9041220321.

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

It is not a de Polignac number, because 1230221409 - 2¹ = 1230221407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1230221407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60469 + ... + 78210.

It is an arithmetic number, because the mean of its divisors is an integer number (205107720).

Almost surely, 2^1230221409 is an apocalyptic number.

It is an amenable number.

1230221409 is a deficient number, since it is larger than the sum of its proper divisors (410640351).

1230221409 is a wasteful number, since it uses less digits than its factorization.

1230221409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141639.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1230221409 is about 35074.5122417975. The cubic root of 1230221409 is about 1071.5055549231.

The spelling of 1230221409 in words is "one billion, two hundred thirty million, two hundred twenty-one thousand, four hundred nine".