20121232103 has 8 divisors (see below), whose sum is σ = 23096998272. Its totient is φ = 17170792056.

The previous prime is 20121232097. The next prime is 20121232111. The reversal of 20121232103 is 30123212102.

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 20121232103 - 2⁶ = 20121232039 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 (20121232003) 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, 6329825 + ... + 6333002.

It is an arithmetic number, because the mean of its divisors is an integer number (2887124784).

Almost surely, 2^20121232103 is an apocalyptic number.

20121232103 is a deficient number, since it is larger than the sum of its proper divisors (2975766169).

20121232103 is a wasteful number, since it uses less digits than its factorization.

20121232103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12663061.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20121232103 its reverse (30123212102), we get a palindrome (50244444205).

The spelling of 20121232103 in words is "twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, one hundred three".