16222651 has 2 divisors, whose sum is σ = 16222652. Its totient is φ = 16222650.

The previous prime is 16222649. The next prime is 16222663. The reversal of 16222651 is 15622261.

It is a weak prime.

It is an emirp because it is prime and its reverse (15622261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16222651 - 2¹ = 16222649 is a prime.

Together with 16222649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16222631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8111325 + 8111326.

It is an arithmetic number, because the mean of its divisors is an integer number (8111326).

Almost surely, 2^16222651 is an apocalyptic number.

16222651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16222651 is an equidigital number, since it uses as much as digits as its factorization.

16222651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 16222651 is about 4027.7352196985. The cubic root of 16222651 is about 253.1476742580.

The spelling of 16222651 in words is "sixteen million, two hundred twenty-two thousand, six hundred fifty-one".