1230000123221 has 8 divisors (see below), whose sum is σ = 1287177182784. Its totient is φ = 1173131296480.

The previous prime is 1230000123217. The next prime is 1230000123263. The reversal of 1230000123221 is 1223210000321.

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 1230000123221 - 2² = 1230000123217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1230000123221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230000023221) 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, 77050040 + ... + 77066001.

It is an arithmetic number, because the mean of its divisors is an integer number (160897147848).

Almost surely, 2^{1230000123221} is an apocalyptic number.

It is an amenable number.

1230000123221 is a deficient number, since it is larger than the sum of its proper divisors (57177059563).

1230000123221 is a wasteful number, since it uses less digits than its factorization.

1230000123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154116411.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1230000123221 its reverse (1223210000321), we get a palindrome (2453210123542).

The spelling of 1230000123221 in words is "one trillion, two hundred thirty billion, one hundred twenty-three thousand, two hundred twenty-one".