201111000102 has 24 divisors (see below), whose sum is σ = 435859730280. Its totient is φ = 67018656960.

The previous prime is 201111000089. The next prime is 201111000109. The reversal of 201111000102 is 201000111102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111000109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1460899 + ... + 1592622.

It is an arithmetic number, because the mean of its divisors is an integer number (18160822095).

Almost surely, 2^201111000102 is an apocalyptic number.

201111000102 is an abundant number, since it is smaller than the sum of its proper divisors (234748730178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201111000102 is a wasteful number, since it uses less digits than its factorization.

201111000102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057188 (or 3057185 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201111000102 its reverse (201000111102), we get a palindrome (402111111204).

It can be divided in two parts, 201111000 and 102, that added together give a palindrome (201111102).

The spelling of 201111000102 in words is "two hundred one billion, one hundred eleven million, one hundred two", and thus it is an aban number.