13220210997 has 24 divisors (see below), whose sum is σ = 22100099840. Its totient is φ = 7458778080.

The previous prime is 13220210893. The next prime is 13220211019. The reversal of 13220210997 is 79901202231.

It is not a de Polignac number, because 13220210997 - 2¹⁰ = 13220209973 is a prime.

It is a super-6 number, since 6×13220210997⁶ (a number of 62 digits) contains 666666 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220210797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1323154 + ... + 1333107.

Almost surely, 2^13220210997 is an apocalyptic number.

It is an amenable number.

13220210997 is a deficient number, since it is larger than the sum of its proper divisors (8879888843).

13220210997 is a wasteful number, since it uses less digits than its factorization.

13220210997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656353 (or 2656350 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 13220210997 in words is "thirteen billion, two hundred twenty million, two hundred ten thousand, nine hundred ninety-seven".