13021121001 has 16 divisors (see below), whose sum is σ = 19860838400. Its totient is φ = 7433466768.

The previous prime is 13021120999. The next prime is 13021121107. The reversal of 13021121001 is 10012112031.

It is not a de Polignac number, because 13021121001 - 2¹ = 13021120999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13021121801) 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, 276571 + ... + 320208.

It is an arithmetic number, because the mean of its divisors is an integer number (1241302400).

Almost surely, 2^13021121001 is an apocalyptic number.

It is an amenable number.

13021121001 is a deficient number, since it is larger than the sum of its proper divisors (6839717399).

13021121001 is a wasteful number, since it uses less digits than its factorization.

13021121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597828.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 13021121001 its reverse (10012112031), we get a palindrome (23033233032).

The spelling of 13021121001 in words is "thirteen billion, twenty-one million, one hundred twenty-one thousand, one".