1100202311221 has 32 divisors (see below), whose sum is σ = 1263501439200. Its totient is φ = 949001650176.

The previous prime is 1100202311203. The next prime is 1100202311227. The reversal of 1100202311221 is 1221132020011.

It can be written as a sum of positive squares in 16 ways, for example, as 626361444900 + 473840866321 = 791430^2 + 688361^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100202311221 - 2⁵ = 1100202311189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100202311195 and 1100202311204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100202311227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93413685 + ... + 93425461.

It is an arithmetic number, because the mean of its divisors is an integer number (39484419975).

Almost surely, 2^{1100202311221} is an apocalyptic number.

It is an amenable number.

1100202311221 is a deficient number, since it is larger than the sum of its proper divisors (163299127979).

1100202311221 is a wasteful number, since it uses less digits than its factorization.

1100202311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14793.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1100202311221 its reverse (1221132020011), we get a palindrome (2321334331232).

The spelling of 1100202311221 in words is "one trillion, one hundred billion, two hundred two million, three hundred eleven thousand, two hundred twenty-one".