123011020232213 has 4 divisors (see below), whose sum is σ = 123100613110668. Its totient is φ = 122921427353760.

The previous prime is 123011020232209. The next prime is 123011020232227. The reversal of 123011020232213 is 312232020110321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57847007141284 + 65164013090929 = 7605722^2 + 8072423^2 .

It is a cyclic number.

It is not a de Polignac number, because 123011020232213 - 2² = 123011020232209 is a prime.

It is a super-2 number, since 2×123011020232213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011020231213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44796437168 + ... + 44796439913.

It is an arithmetic number, because the mean of its divisors is an integer number (30775153277667).

Almost surely, 2^{123011020232213} is an apocalyptic number.

It is an amenable number.

123011020232213 is a deficient number, since it is larger than the sum of its proper divisors (89592878455).

123011020232213 is an equidigital number, since it uses as much as digits as its factorization.

123011020232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89592878454.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123011020232213 its reverse (312232020110321), we get a palindrome (435243040342534).

The spelling of 123011020232213 in words is "one hundred twenty-three trillion, eleven billion, twenty million, two hundred thirty-two thousand, two hundred thirteen".