20200111002101 has 4 divisors (see below), whose sum is σ = 21388352825772. Its totient is φ = 19011869178432.

The previous prime is 20200111002041. The next prime is 20200111002143. The reversal of 20200111002101 is 10120011100202.

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 13716727032100 + 6483383970001 = 3703610^2 + 2546249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200111002101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200111002301) 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, 594120911810 + ... + 594120911843.

It is an arithmetic number, because the mean of its divisors is an integer number (5347088206443).

Almost surely, 2^{20200111002101} is an apocalyptic number.

It is an amenable number.

20200111002101 is a deficient number, since it is larger than the sum of its proper divisors (1188241823671).

20200111002101 is a wasteful number, since it uses less digits than its factorization.

20200111002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188241823670.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20200111002101 its reverse (10120011100202), we get a palindrome (30320122102303).

The spelling of 20200111002101 in words is "twenty trillion, two hundred billion, one hundred eleven million, two thousand, one hundred one".