123311404221 has 16 divisors (see below), whose sum is σ = 174553435584. Its totient is φ = 77164418304.

The previous prime is 123311404219. The next prime is 123311404243. The reversal of 123311404221 is 122404113321.

It is not a de Polignac number, because 123311404221 - 2¹ = 123311404219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123311404191 and 123311404200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311404201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3222091 + ... + 3260136.

It is an arithmetic number, because the mean of its divisors is an integer number (10909589724).

Almost surely, 2^123311404221 is an apocalyptic number.

It is an amenable number.

123311404221 is a deficient number, since it is larger than the sum of its proper divisors (51242031363).

123311404221 is a wasteful number, since it uses less digits than its factorization.

123311404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482620.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 123311404221 its reverse (122404113321), we get a palindrome (245715517542).

The spelling of 123311404221 in words is "one hundred twenty-three billion, three hundred eleven million, four hundred four thousand, two hundred twenty-one".