20122667 has 6 divisors (see below), whose sum is σ = 20603412. Its totient is φ = 19652892.

The previous prime is 20122651. The next prime is 20122673. The reversal of 20122667 is 76622102.

It is not a de Polignac number, because 20122667 - 2⁴ = 20122651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122637) 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 5 ways as a sum of consecutive naturals, for example, 3593 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (3433902).

Almost surely, 2^20122667 is an apocalyptic number.

20122667 is a deficient number, since it is larger than the sum of its proper divisors (480745).

20122667 is an equidigital number, since it uses as much as digits as its factorization.

20122667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10969 (or 10926 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20122667 is about 4485.8295776813. The cubic root of 20122667 is about 271.9955800536.

Adding to 20122667 its reverse (76622102), we get a palindrome (96744769).

The spelling of 20122667 in words is "twenty million, one hundred twenty-two thousand, six hundred sixty-seven".