16220013 has 4 divisors (see below), whose sum is σ = 21626688. Its totient is φ = 10813340.

The previous prime is 16219981. The next prime is 16220069. The reversal of 16220013 is 31002261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16220013 - 2⁵ = 16219981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16219974 and 16220001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220093) 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 3 ways as a sum of consecutive naturals, for example, 2703333 + ... + 2703338.

It is an arithmetic number, because the mean of its divisors is an integer number (5406672).

Almost surely, 2^16220013 is an apocalyptic number.

It is an amenable number.

16220013 is a deficient number, since it is larger than the sum of its proper divisors (5406675).

16220013 is an equidigital number, since it uses as much as digits as its factorization.

16220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406674.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 16220013 is about 4027.4077270622. The cubic root of 16220013 is about 253.1339518858.

Adding to 16220013 its reverse (31002261), we get a palindrome (47222274).

The spelling of 16220013 in words is "sixteen million, two hundred twenty thousand, thirteen".