20000122 has 12 divisors (see below), whose sum is σ = 31663386. Its totient is φ = 9473400.

The previous prime is 20000107. The next prime is 20000147. The reversal of 20000122 is 22100002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17631601 + 2368521 = 4199^2 + 1539^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13129 + ... + 14572.

Almost surely, 2^20000122 is an apocalyptic number.

20000122 is a deficient number, since it is larger than the sum of its proper divisors (11663264).

20000122 is a wasteful number, since it uses less digits than its factorization.

20000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27741 (or 27722 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 20000122 is about 4472.1495949934. The cubic root of 20000122 is about 271.4423135900.

Adding to 20000122 its reverse (22100002), we get a palindrome (42100124).

The spelling of 20000122 in words is "twenty million, one hundred twenty-two", and thus it is an aban number.