201020102111 has 8 divisors (see below), whose sum is σ = 208033488000. Its totient is φ = 194012160160.

The previous prime is 201020102093. The next prime is 201020102123. The reversal of 201020102111 is 111201020102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201020102111 - 2¹⁸ = 201019839967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201020102092 and 201020102101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020102191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285775 + ... + 1433616.

It is an arithmetic number, because the mean of its divisors is an integer number (26004186000).

Almost surely, 2^201020102111 is an apocalyptic number.

201020102111 is a deficient number, since it is larger than the sum of its proper divisors (7013385889).

201020102111 is a wasteful number, since it uses less digits than its factorization.

201020102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721969.

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

Adding to 201020102111 its reverse (111201020102), we get a palindrome (312221122213).

It can be divided in two parts, 201020102 and 111, that multiplied together give a palindrome (22313231322).

The spelling of 201020102111 in words is "two hundred one billion, twenty million, one hundred two thousand, one hundred eleven".