1121001102 has 96 divisors (see below), whose sum is σ = 2785255200. Its totient is φ = 322983936.

The previous prime is 1121001047. The next prime is 1121001107. The reversal of 1121001102 is 2011001211.

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 (1121001107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 394278 + ... + 397110.

It is an arithmetic number, because the mean of its divisors is an integer number (29013075).

Almost surely, 2^1121001102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121001102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392627600).

1121001102 is an abundant number, since it is smaller than the sum of its proper divisors (1664254098).

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

1121001102 is a wasteful number, since it uses less digits than its factorization.

1121001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962 (or 2959 counting only the distinct ones).

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

The square root of 1121001102 is about 33481.3545424913. The cubic root of 1121001102 is about 1038.8081458587.

Adding to 1121001102 its reverse (2011001211), we get a palindrome (3132002313).

The spelling of 1121001102 in words is "one billion, one hundred twenty-one million, one thousand, one hundred two".