20013111202101 has 4 divisors (see below), whose sum is σ = 26684148269472. Its totient is φ = 13342074134732.

The previous prime is 20013111202081. The next prime is 20013111202103. The reversal of 20013111202101 is 10120211131002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20013111202101 - 2⁵ = 20013111202069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013111202103) 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, 3335518533681 + ... + 3335518533686.

It is an arithmetic number, because the mean of its divisors is an integer number (6671037067368).

Almost surely, 2^{20013111202101} is an apocalyptic number.

It is an amenable number.

20013111202101 is a deficient number, since it is larger than the sum of its proper divisors (6671037067371).

20013111202101 is an equidigital number, since it uses as much as digits as its factorization.

20013111202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671037067370.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20013111202101 its reverse (10120211131002), we get a palindrome (30133322333103).

The spelling of 20013111202101 in words is "twenty trillion, thirteen billion, one hundred eleven million, two hundred two thousand, one hundred one".