123220322232011 has 4 divisors (see below), whose sum is σ = 123307774555800. Its totient is φ = 123132869908224.

The previous prime is 123220322231989. The next prime is 123220322232037. The reversal of 123220322232011 is 110232223022321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123220322232011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123220322232311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43726159781 + ... + 43726162598.

It is an arithmetic number, because the mean of its divisors is an integer number (30826943638950).

Almost surely, 2^{123220322232011} is an apocalyptic number.

123220322232011 is a deficient number, since it is larger than the sum of its proper divisors (87452323789).

123220322232011 is an equidigital number, since it uses as much as digits as its factorization.

123220322232011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87452323788.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 123220322232011 its reverse (110232223022321), we get a palindrome (233452545254332).

The spelling of 123220322232011 in words is "one hundred twenty-three trillion, two hundred twenty billion, three hundred twenty-two million, two hundred thirty-two thousand, eleven".