13220104 has 8 divisors (see below), whose sum is σ = 24787710. Its totient is φ = 6610048.

The previous prime is 13220099. The next prime is 13220117. The reversal of 13220104 is 40102231.

It can be written as a sum of positive squares in only one way, i.e., 10227204 + 2992900 = 3198^2 + 1730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13220104² = 349542299541632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826249 + ... + 826264.

Almost surely, 2^13220104 is an apocalyptic number.

It is an amenable number.

13220104 is a deficient number, since it is larger than the sum of its proper divisors (11567606).

13220104 is a wasteful number, since it uses less digits than its factorization.

13220104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652519 (or 1652515 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13220104 is about 3635.9460942099. The cubic root of 13220104 is about 236.4530700832.

Adding to 13220104 its reverse (40102231), we get a palindrome (53322335).

The spelling of 13220104 in words is "thirteen million, two hundred twenty thousand, one hundred four".