1100221012120 has 32 divisors (see below), whose sum is σ = 2493306622800. Its totient is φ = 436922299008.

The previous prime is 1100221012109. The next prime is 1100221012129. The reversal of 1100221012120 is 212101220011.

It is a self number, because there is not a number n which added to its sum of digits gives 1100221012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100221012129) 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, 98935179 + ... + 98946298.

Almost surely, 2^{1100221012120} is an apocalyptic number.

1100221012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100221012120 is an abundant number, since it is smaller than the sum of its proper divisors (1393085610680).

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

1100221012120 is a wasteful number, since it uses less digits than its factorization.

1100221012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197881627 (or 197881623 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1100221012120 its reverse (212101220011), we get a palindrome (1312322232131).

The spelling of 1100221012120 in words is "one trillion, one hundred billion, two hundred twenty-one million, twelve thousand, one hundred twenty".