20130122 has 8 divisors (see below), whose sum is σ = 30690372. Its totient is φ = 9900000.

The previous prime is 20130079. The next prime is 20130163. The reversal of 20130122 is 22103102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14508481 + 5621641 = 3809^2 + 2371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 82379 + ... + 82622.

Almost surely, 2^20130122 is an apocalyptic number.

20130122 is a deficient number, since it is larger than the sum of its proper divisors (10560250).

20130122 is a wasteful number, since it uses less digits than its factorization.

20130122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165064.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 20130122 is about 4486.6604507139. The cubic root of 20130122 is about 272.0291653415.

Adding to 20130122 its reverse (22103102), we get a palindrome (42233224).

The spelling of 20130122 in words is "twenty million, one hundred thirty thousand, one hundred twenty-two".