1011102102 has 48 divisors (see below), whose sum is σ = 2281865040. Its totient is φ = 335549952.

The previous prime is 1011102089. The next prime is 1011102109. The reversal of 1011102102 is 2012011101.

It is a happy number.

It is a super-3 number, since 3×1011102102³ (a number of 28 digits) contains 333 as substring.

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 (1011102109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108774 + ... + 117702.

It is an arithmetic number, because the mean of its divisors is an integer number (47538855).

Almost surely, 2^1011102102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011102102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140932520).

1011102102 is an abundant number, since it is smaller than the sum of its proper divisors (1270762938).

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

1011102102 is an equidigital number, since it uses as much as digits as its factorization.

1011102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179 (or 9167 counting only the distinct ones).

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

The square root of 1011102102 is about 31797.8317185307. The cubic root of 1011102102 is about 1003.6870893307.

Adding to 1011102102 its reverse (2012011101), we get a palindrome (3023113203).

The spelling of 1011102102 in words is "one billion, eleven million, one hundred two thousand, one hundred two".