20011102312103 has 4 divisors (see below), whose sum is σ = 22869831213840. Its totient is φ = 17152373410368.

The previous prime is 20011102312093. The next prime is 20011102312121. The reversal of 20011102312103 is 30121320111002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20011102312103 - 2¹² = 20011102308007 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 (20011102312303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429364450858 + ... + 1429364450871.

It is an arithmetic number, because the mean of its divisors is an integer number (5717457803460).

Almost surely, 2^{20011102312103} is an apocalyptic number.

20011102312103 is a deficient number, since it is larger than the sum of its proper divisors (2858728901737).

20011102312103 is an equidigital number, since it uses as much as digits as its factorization.

20011102312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858728901736.

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

Adding to 20011102312103 its reverse (30121320111002), we get a palindrome (50132422423105).

The spelling of 20011102312103 in words is "twenty trillion, eleven billion, one hundred two million, three hundred twelve thousand, one hundred three".