13021123101 has 32 divisors (see below), whose sum is σ = 20722556928. Its totient is φ = 7110892800.

The previous prime is 13021123081. The next prime is 13021123117. The reversal of 13021123101 is 10132112031.

It is a happy number.

It is not a de Polignac number, because 13021123101 - 2⁹ = 13021122589 is a prime.

It is a super-2 number, since 2×13021123101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021123121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568860 + ... + 591306.

It is an arithmetic number, because the mean of its divisors is an integer number (647579904).

Almost surely, 2^13021123101 is an apocalyptic number.

It is an amenable number.

13021123101 is a deficient number, since it is larger than the sum of its proper divisors (7701433827).

13021123101 is a wasteful number, since it uses less digits than its factorization.

13021123101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23681.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 13021123101 its reverse (10132112031), we get a palindrome (23153235132).

The spelling of 13021123101 in words is "thirteen billion, twenty-one million, one hundred twenty-three thousand, one hundred one".