123321122011 has 8 divisors (see below), whose sum is σ = 129834832400. Its totient is φ = 116809724160.

The previous prime is 123321121993. The next prime is 123321122017. The reversal of 123321122011 is 110221123321.

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 123321122011 - 2⁹ = 123321121499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 123321122011.

It is not an unprimeable number, because it can be changed into a prime (123321122017) 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, 468126 + ... + 682483.

It is an arithmetic number, because the mean of its divisors is an integer number (16229354050).

Almost surely, 2^123321122011 is an apocalyptic number.

123321122011 is a deficient number, since it is larger than the sum of its proper divisors (6513710389).

123321122011 is a wasteful number, since it uses less digits than its factorization.

123321122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156269.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123321122011 its reverse (110221123321), we get a palindrome (233542245332).

The spelling of 123321122011 in words is "one hundred twenty-three billion, three hundred twenty-one million, one hundred twenty-two thousand, eleven".