1101112201221 has 24 divisors (see below), whose sum is σ = 1520684808864. Its totient is φ = 708685602240.

The previous prime is 1101112201207. The next prime is 1101112201249. The reversal of 1101112201221 is 1221022111011.

It is a happy number.

It is not a de Polignac number, because 1101112201221 - 2⁶ = 1101112201157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101112201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101112209221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32168806 + ... + 32203016.

It is an arithmetic number, because the mean of its divisors is an integer number (63361867036).

Almost surely, 2^{1101112201221} is an apocalyptic number.

It is an amenable number.

1101112201221 is a deficient number, since it is larger than the sum of its proper divisors (419572607643).

1101112201221 is a wasteful number, since it uses less digits than its factorization.

1101112201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47029 (or 47000 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1101112201221 its reverse (1221022111011), we get a palindrome (2322134312232).

The spelling of 1101112201221 in words is "one trillion, one hundred one billion, one hundred twelve million, two hundred one thousand, two hundred twenty-one".