1100221222012 has 72 divisors (see below), whose sum is σ = 2191168158480. Its totient is φ = 482446272000.

The previous prime is 1100221222007. The next prime is 1100221222031. The reversal of 1100221222012 is 2102221220011.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16824603 + ... + 16889869.

It is an arithmetic number, because the mean of its divisors is an integer number (30432891090).

Almost surely, 2^{1100221222012} is an apocalyptic number.

It is an amenable number.

1100221222012 is a deficient number, since it is larger than the sum of its proper divisors (1090946936468).

1100221222012 is a wasteful number, since it uses less digits than its factorization.

1100221222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66523 (or 66510 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1100221222012 its reverse (2102221220011), we get a palindrome (3202442442023).

The spelling of 1100221222012 in words is "one trillion, one hundred billion, two hundred twenty-one million, two hundred twenty-two thousand, twelve".