123211000321 has 4 divisors (see below), whose sum is σ = 123212432644. Its totient is φ = 123209568000.

The previous prime is 123211000303. The next prime is 123211000327. The reversal of 123211000321 is 123000112321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47332788721 + 75878211600 = 217561^2 + 275460^2 .

It is a cyclic number.

It is not a de Polignac number, because 123211000321 - 2¹⁵ = 123210967553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123211000295 and 123211000304.

It is not an unprimeable number, because it can be changed into a prime (123211000327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578280 + ... + 762121.

It is an arithmetic number, because the mean of its divisors is an integer number (30803108161).

Almost surely, 2^123211000321 is an apocalyptic number.

It is an amenable number.

123211000321 is a deficient number, since it is larger than the sum of its proper divisors (1432323).

123211000321 is an equidigital number, since it uses as much as digits as its factorization.

123211000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432322.

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

Adding to 123211000321 its reverse (123000112321), we get a palindrome (246211112642).

The spelling of 123211000321 in words is "one hundred twenty-three billion, two hundred eleven million, three hundred twenty-one", and thus it is an aban number.