20020111302101 has 4 divisors (see below), whose sum is σ = 20069060229900. Its totient is φ = 19971162374304.

The previous prime is 20020111302053. The next prime is 20020111302143. The reversal of 20020111302101 is 10120311102002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10687080192100 + 9333031110001 = 3269110^2 + 3055001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020111302101 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 (20020111302601) 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, 24474463286 + ... + 24474464103.

It is an arithmetic number, because the mean of its divisors is an integer number (5017265057475).

Almost surely, 2^{20020111302101} is an apocalyptic number.

It is an amenable number.

20020111302101 is a deficient number, since it is larger than the sum of its proper divisors (48948927799).

20020111302101 is an equidigital number, since it uses as much as digits as its factorization.

20020111302101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48948927798.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20020111302101 its reverse (10120311102002), we get a palindrome (30140422404103).

The spelling of 20020111302101 in words is "twenty trillion, twenty billion, one hundred eleven million, three hundred two thousand, one hundred one".