13220123101 has 8 divisors (see below), whose sum is σ = 13375360440. Its totient is φ = 13065034752.

The previous prime is 13220123087. The next prime is 13220123123. The reversal of 13220123101 is 10132102231.

It can be written as a sum of positive squares in 4 ways, for example, as 3517676100 + 9702447001 = 59310^2 + 98501^2 .

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 13220123101 - 2⁷ = 13220122973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220123131) 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, 146541 + ... + 218893.

It is an arithmetic number, because the mean of its divisors is an integer number (1671920055).

Almost surely, 2^13220123101 is an apocalyptic number.

It is an amenable number.

13220123101 is a deficient number, since it is larger than the sum of its proper divisors (155237339).

13220123101 is an equidigital number, since it uses as much as digits as its factorization.

13220123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74495.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13220123101 its reverse (10132102231), we get a palindrome (23352225332).

The spelling of 13220123101 in words is "thirteen billion, two hundred twenty million, one hundred twenty-three thousand, one hundred one".