1002111100 has 18 divisors (see below), whose sum is σ = 2174581304. Its totient is φ = 400844400.

The previous prime is 1002111083. The next prime is 1002111107. The reversal of 1002111100 is 11112001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002111107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5010456 + ... + 5010655.

Almost surely, 2^1002111100 is an apocalyptic number.

1002111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002111100 is an abundant number, since it is smaller than the sum of its proper divisors (1172470204).

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

1002111100 is a wasteful number, since it uses less digits than its factorization.

1002111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021125 (or 10021118 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1002111100 is about 31656.1384252723. The cubic root of 1002111100 is about 1000.7032053863.

Adding to 1002111100 its reverse (11112001), we get a palindrome (1013223101).

Subtracting from 1002111100 its reverse (11112001), we obtain a palindrome (990999099).

The spelling of 1002111100 in words is "one billion, two million, one hundred eleven thousand, one hundred".