20121220101103 has 8 divisors (see below), whose sum is σ = 21950455224960. Its totient is φ = 18291990526680.

The previous prime is 20121220101083. The next prime is 20121220101139. The reversal of 20121220101103 is 30110102212102.

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 20121220101103 - 2²⁹ = 20120683230191 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 (20121220101173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11012488 + ... + 12708946.

It is an arithmetic number, because the mean of its divisors is an integer number (2743806903120).

Almost surely, 2^{20121220101103} is an apocalyptic number.

20121220101103 is a deficient number, since it is larger than the sum of its proper divisors (1829235123857).

20121220101103 is a wasteful number, since it uses less digits than its factorization.

20121220101103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774717.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20121220101103 its reverse (30110102212102), we get a palindrome (50231322313205).

The spelling of 20121220101103 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty million, one hundred one thousand, one hundred three".