123321011 has 8 divisors (see below), whose sum is σ = 134841024. Its totient is φ = 111852520.

The previous prime is 123320999. The next prime is 123321041. The reversal of 123321011 is 110123321.

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 123321011 - 2¹⁸ = 123058867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123321041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7781 + ... + 17526.

It is an arithmetic number, because the mean of its divisors is an integer number (16855128).

Almost surely, 2^123321011 is an apocalyptic number.

123321011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123321011 is a deficient number, since it is larger than the sum of its proper divisors (11520013).

123321011 is a wasteful number, since it uses less digits than its factorization.

123321011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25761.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 123321011 is about 11104.9993696533. Note that the first 3 decimals coincide. The cubic root of 123321011 is about 497.7512494037.

Adding to 123321011 its sum of digits (14), we get a square (123321025 = 11105²).

Adding to 123321011 its reverse (110123321), we get a palindrome (233444332).

The spelling of 123321011 in words is "one hundred twenty-three million, three hundred twenty-one thousand, eleven".