20120122103 has 8 divisors (see below), whose sum is σ = 20471021376. Its totient is φ = 19771257600.

The previous prime is 20120122079. The next prime is 20120122147. The reversal of 20120122103 is 30122102102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20120122103 - 2¹⁸ = 20119859959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120124103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488738 + ... + 528303.

It is an arithmetic number, because the mean of its divisors is an integer number (2558877672).

Almost surely, 2^20120122103 is an apocalyptic number.

20120122103 is a deficient number, since it is larger than the sum of its proper divisors (350899273).

20120122103 is a wasteful number, since it uses less digits than its factorization.

20120122103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017385.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20120122103 its reverse (30122102102), we get a palindrome (50242224205).

The spelling of 20120122103 in words is "twenty billion, one hundred twenty million, one hundred twenty-two thousand, one hundred three".