1100221012 has 24 divisors (see below), whose sum is σ = 2101357440. Its totient is φ = 499877760.

The previous prime is 1100220991. The next prime is 1100221013. The reversal of 1100221012 is 2101220011.

It is a self number, because there is not a number n which added to its sum of digits gives 1100221012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100221013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133228 + ... + 141244.

It is an arithmetic number, because the mean of its divisors is an integer number (87556560).

Almost surely, 2^1100221012 is an apocalyptic number.

It is an amenable number.

1100221012 is a deficient number, since it is larger than the sum of its proper divisors (1001136428).

1100221012 is a wasteful number, since it uses less digits than its factorization.

1100221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11151 (or 11149 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1100221012 is about 33169.5796174748. The cubic root of 1100221012 is about 1032.3492460669.

Adding to 1100221012 its reverse (2101220011), we get a palindrome (3201441023).

The spelling of 1100221012 in words is "one billion, one hundred million, two hundred twenty-one thousand, twelve".