1100222120000 has 70 divisors (see below), whose sum is σ = 2728193384598. Its totient is φ = 440088832000.

The previous prime is 1100222119951. The next prime is 1100222120003. The reversal of 1100222120000 is 212220011.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 544195388416 + 556026731584 = 737696^2 + 745672^2 .

It is not an unprimeable number, because it can be changed into a prime (1100222120003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13712777 + ... + 13792776.

Almost surely, 2^{1100222120000} is an apocalyptic number.

1100222120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100222120000 is an abundant number, since it is smaller than the sum of its proper divisors (1627971264598).

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

1100222120000 is an frugal number, since it uses more digits than its factorization.

1100222120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27505585 (or 27505560 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1100222120000 its reverse (212220011), we get a palindrome (1100434340011).

The spelling of 1100222120000 in words is "one trillion, one hundred billion, two hundred twenty-two million, one hundred twenty thousand".