1101012102 has 48 divisors (see below), whose sum is σ = 2485217280. Its totient is φ = 365322312.

The previous prime is 1101012091. The next prime is 1101012103. The reversal of 1101012102 is 2012101011.

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 (1101012103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103299 + ... + 113457.

It is an arithmetic number, because the mean of its divisors is an integer number (51775360).

Almost surely, 2^1101012102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101012102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242608640).

1101012102 is an abundant number, since it is smaller than the sum of its proper divisors (1384205178).

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

1101012102 is a wasteful number, since it uses less digits than its factorization.

1101012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10399 (or 10387 counting only the distinct ones).

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

The square root of 1101012102 is about 33181.5024072148. The cubic root of 1101012102 is about 1032.5966162151.

Adding to 1101012102 its reverse (2012101011), we get a palindrome (3113113113).

The spelling of 1101012102 in words is "one billion, one hundred one million, twelve thousand, one hundred two".