201002102111 has 4 divisors (see below), whose sum is σ = 201058582800. Its totient is φ = 200945621424.

The previous prime is 201002102107. The next prime is 201002102141. The reversal of 201002102111 is 111201200102.

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 201002102111 - 2² = 201002102107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201002102092 and 201002102101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002102141) 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, 28235006 + ... + 28242123.

It is an arithmetic number, because the mean of its divisors is an integer number (50264645700).

Almost surely, 2^201002102111 is an apocalyptic number.

201002102111 is a deficient number, since it is larger than the sum of its proper divisors (56480689).

201002102111 is an equidigital number, since it uses as much as digits as its factorization.

201002102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56480688.

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

Adding to 201002102111 its reverse (111201200102), we get a palindrome (312203302213).

The spelling of 201002102111 in words is "two hundred one billion, two million, one hundred two thousand, one hundred eleven".