1111020201221 has 16 divisors (see below), whose sum is σ = 1288860249600. Its totient is φ = 937964657520.

The previous prime is 1111020201139. The next prime is 1111020201223. The reversal of 1111020201221 is 1221020201111.

It is a cyclic number.

It is not a de Polignac number, because 1111020201221 - 2¹⁴ = 1111020184837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111020201196 and 1111020201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111020201223) 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, 3456986 + ... + 3764676.

It is an arithmetic number, because the mean of its divisors is an integer number (80553765600).

Almost surely, 2^{1111020201221} is an apocalyptic number.

It is an amenable number.

1111020201221 is a deficient number, since it is larger than the sum of its proper divisors (177840048379).

1111020201221 is an equidigital number, since it uses as much as digits as its factorization.

1111020201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315464.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1111020201221 its reverse (1221020201111), we get a palindrome (2332040402332).

The spelling of 1111020201221 in words is "one trillion, one hundred eleven billion, twenty million, two hundred one thousand, two hundred twenty-one".