13022121 has 16 divisors (see below), whose sum is σ = 20028800. Its totient is φ = 7371648.

The previous prime is 13022099. The next prime is 13022129. The reversal of 13022121 is 12122031.

It is not a de Polignac number, because 13022121 - 2⁷ = 13021993 is a prime.

It is a Duffinian number.

13022121 is a modest number, since divided by 2121 gives 1302 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 13022097 and 13022106.

It is not an unprimeable number, because it can be changed into a prime (13022129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (1251800).

Almost surely, 2^13022121 is an apocalyptic number.

It is an amenable number.

13022121 is a deficient number, since it is larger than the sum of its proper divisors (7006679).

13022121 is a wasteful number, since it uses less digits than its factorization.

13022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5808.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13022121 is about 3608.6176023513. The cubic root of 13022121 is about 235.2667621053.

Adding to 13022121 its reverse (12122031), we get a palindrome (25144152).

The spelling of 13022121 in words is "thirteen million, twenty-two thousand, one hundred twenty-one".