20112312001103 has 16 divisors (see below), whose sum is σ = 23107578531840. Its totient is φ = 17147578812000.

The previous prime is 20112312001099. The next prime is 20112312001219. The reversal of 20112312001103 is 30110021321102.

It is not a de Polignac number, because 20112312001103 - 2² = 20112312001099 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 (20112312006103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17449628 + ... + 18566478.

It is an arithmetic number, because the mean of its divisors is an integer number (1444223658240).

Almost surely, 2^{20112312001103} is an apocalyptic number.

20112312001103 is a deficient number, since it is larger than the sum of its proper divisors (2995266530737).

20112312001103 is a wasteful number, since it uses less digits than its factorization.

20112312001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130518.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20112312001103 its reverse (30110021321102), we get a palindrome (50222333322205).

The spelling of 20112312001103 in words is "twenty trillion, one hundred twelve billion, three hundred twelve million, one thousand, one hundred three".