13022022121 has 4 divisors (see below), whose sum is σ = 13022308692. Its totient is φ = 13021735552.

The previous prime is 13022022109. The next prime is 13022022127. The reversal of 13022022121 is 12122022031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12122022031 = 7 ⋅1731717433.

It can be written as a sum of positive squares in 2 ways, for example, as 10248525225 + 2773496896 = 101235^2 + 52664^2 .

It is a cyclic number.

It is not a de Polignac number, because 13022022121 - 2⁷ = 13022021993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13022022095 and 13022022104.

It is not an unprimeable number, because it can be changed into a prime (13022022127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58336 + ... + 171601.

It is an arithmetic number, because the mean of its divisors is an integer number (3255577173).

Almost surely, 2^13022022121 is an apocalyptic number.

It is an amenable number.

13022022121 is a deficient number, since it is larger than the sum of its proper divisors (286571).

13022022121 is an equidigital number, since it uses as much as digits as its factorization.

13022022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286570.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13022022121 its reverse (12122022031), we get a palindrome (25144044152).

The spelling of 13022022121 in words is "thirteen billion, twenty-two million, twenty-two thousand, one hundred twenty-one".