1100100022221 has 64 divisors (see below), whose sum is σ = 1684805861376. Its totient is φ = 634822272000.

The previous prime is 1100100022027. The next prime is 1100100022243. The reversal of 1100100022221 is 1222200010011.

It is not a de Polignac number, because 1100100022221 - 2¹⁸ = 1100099760077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100100022197 and 1100100022206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100100022421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2296696 + ... + 2734046.

It is an arithmetic number, because the mean of its divisors is an integer number (26325091584).

Almost surely, 2^{1100100022221} is an apocalyptic number.

It is an amenable number.

1100100022221 is a deficient number, since it is larger than the sum of its proper divisors (584705839155).

1100100022221 is a wasteful number, since it uses less digits than its factorization.

1100100022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437482.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1100100022221 its reverse (1222200010011), we get a palindrome (2322300032232).

The spelling of 1100100022221 in words is "one trillion, one hundred billion, one hundred million, twenty-two thousand, two hundred twenty-one".