1100020201221 has 16 divisors (see below), whose sum is σ = 1481317397568. Its totient is φ = 726035904000.

The previous prime is 1100020201201. The next prime is 1100020201223. The reversal of 1100020201221 is 1221020200011.

It is not a de Polignac number, because 1100020201221 - 2¹³ = 1100020193029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100020201197 and 1100020201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100020201223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4569141 + ... + 4803861.

It is an arithmetic number, because the mean of its divisors is an integer number (92582337348).

Almost surely, 2^{1100020201221} is an apocalyptic number.

It is an amenable number.

1100020201221 is a deficient number, since it is larger than the sum of its proper divisors (381297196347).

1100020201221 is a wasteful number, since it uses less digits than its factorization.

1100020201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250292.

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

Adding to 1100020201221 its reverse (1221020200011), we get a palindrome (2321040401232).

The spelling of 1100020201221 in words is "one trillion, one hundred billion, twenty million, two hundred one thousand, two hundred twenty-one".