1100202012 has 144 divisors (see below), whose sum is σ = 3445059072. Its totient is φ = 288282240.

The previous prime is 1100202007. The next prime is 1100202023. The reversal of 1100202012 is 2102020011.

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

It is a junction number, because it is equal to n+sod(n) for n = 1100201985 and 1100202003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 546087 + ... + 548097.

Almost surely, 2^1100202012 is an apocalyptic number.

1100202012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100202012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722529536).

1100202012 is an abundant number, since it is smaller than the sum of its proper divisors (2344857060).

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

1100202012 is a wasteful number, since it uses less digits than its factorization.

1100202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1100202012 is about 33169.2932092319. The cubic root of 1100202012 is about 1032.3433033977.

Adding to 1100202012 its reverse (2102020011), we get a palindrome (3202222023).

The spelling of 1100202012 in words is "one billion, one hundred million, two hundred two thousand, twelve".