13000221123 has 16 divisors (see below), whose sum is σ = 18269673120. Its totient is φ = 8210069504.

The previous prime is 13000221109. The next prime is 13000221127. The reversal of 13000221123 is 32112200031.

It is a cyclic number.

It is not a de Polignac number, because 13000221123 - 2⁸ = 13000220867 is a prime.

It is a super-3 number, since 3×13000221123³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (13000221127) 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, 1405086 + ... + 1414307.

It is an arithmetic number, because the mean of its divisors is an integer number (1141854570).

Almost surely, 2^13000221123 is an apocalyptic number.

13000221123 is a deficient number, since it is larger than the sum of its proper divisors (5269451997).

13000221123 is a wasteful number, since it uses less digits than its factorization.

13000221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819478.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13000221123 its reverse (32112200031), we get a palindrome (45112421154).

The spelling of 13000221123 in words is "thirteen billion, two hundred twenty-one thousand, one hundred twenty-three".