13220002 has 8 divisors (see below), whose sum is σ = 20204316. Its totient is φ = 6485232.

The previous prime is 13219979. The next prime is 13220003. The reversal of 13220002 is 20002231.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 1585081 = 3411^2 + 1259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62253 + ... + 62464.

Almost surely, 2^13220002 is an apocalyptic number.

13220002 is a deficient number, since it is larger than the sum of its proper divisors (6984314).

13220002 is a wasteful number, since it uses less digits than its factorization.

13220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124772.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 13220002 is about 3635.9320675722. The cubic root of 13220002 is about 236.4524619621.

Adding to 13220002 its reverse (20002231), we get a palindrome (33222233).

The spelling of 13220002 in words is "thirteen million, two hundred twenty thousand, two".