20103200131111 has 4 divisors (see below), whose sum is σ = 21285741315312. Its totient is φ = 18920658946912.

The previous prime is 20103200131109. The next prime is 20103200131121. The reversal of 20103200131111 is 11113100230102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20103200131111 - 2¹ = 20103200131109 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 (20103200131121) 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, 591270592075 + ... + 591270592108.

It is an arithmetic number, because the mean of its divisors is an integer number (5321435328828).

Almost surely, 2^{20103200131111} is an apocalyptic number.

20103200131111 is a deficient number, since it is larger than the sum of its proper divisors (1182541184201).

20103200131111 is a wasteful number, since it uses less digits than its factorization.

20103200131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182541184200.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20103200131111 its reverse (11113100230102), we get a palindrome (31216300361213).

The spelling of 20103200131111 in words is "twenty trillion, one hundred three billion, two hundred million, one hundred thirty-one thousand, one hundred eleven".