16621102 has 4 divisors (see below), whose sum is σ = 24931656. Its totient is φ = 8310550.

The previous prime is 16621093. The next prime is 16621109. The reversal of 16621102 is 20112661.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×16621102² = 552522063388808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16621102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16621109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4155274 + ... + 4155277.

It is an arithmetic number, because the mean of its divisors is an integer number (6232914).

Almost surely, 2^16621102 is an apocalyptic number.

16621102 is a deficient number, since it is larger than the sum of its proper divisors (8310554).

16621102 is an equidigital number, since it uses as much as digits as its factorization.

16621102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8310553.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 16621102 is about 4076.8985761238. The cubic root of 16621102 is about 255.2034874541.

Adding to 16621102 its reverse (20112661), we get a palindrome (36733763).

The spelling of 16621102 in words is "sixteen million, six hundred twenty-one thousand, one hundred two".