123213321211 has 8 divisors (see below), whose sum is σ = 124441784064. Its totient is φ = 121985478120.

The previous prime is 123213321193. The next prime is 123213321223. The reversal of 123213321211 is 112123312321.

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 123213321211 - 2³⁵ = 88853582843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123213321241) 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 7 ways as a sum of consecutive naturals, for example, 249900 + ... + 555766.

It is an arithmetic number, because the mean of its divisors is an integer number (15555223008).

Almost surely, 2^123213321211 is an apocalyptic number.

123213321211 is a deficient number, since it is larger than the sum of its proper divisors (1228462853).

123213321211 is a wasteful number, since it uses less digits than its factorization.

123213321211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309881.

The product of its digits is 432, while the sum is 22.

Adding to 123213321211 its reverse (112123312321), we get a palindrome (235336633532).

The spelling of 123213321211 in words is "one hundred twenty-three billion, two hundred thirteen million, three hundred twenty-one thousand, two hundred eleven".