1112101021221 has 16 divisors (see below), whose sum is σ = 1566229800960. Its totient is φ = 700798840560.

The previous prime is 1112101021189. The next prime is 1112101021223. The reversal of 1112101021221 is 1221201012111.

It is a happy number.

It is not a de Polignac number, because 1112101021221 - 2⁵ = 1112101021189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1112101021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112101021223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139043391 + ... + 139051388.

It is an arithmetic number, because the mean of its divisors is an integer number (97889362560).

Almost surely, 2^{1112101021221} is an apocalyptic number.

It is an amenable number.

1112101021221 is a deficient number, since it is larger than the sum of its proper divisors (454128779739).

1112101021221 is a wasteful number, since it uses less digits than its factorization.

1112101021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278094856.

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

Adding to 1112101021221 its reverse (1221201012111), we get a palindrome (2333302033332).

The spelling of 1112101021221 in words is "one trillion, one hundred twelve billion, one hundred one million, twenty-one thousand, two hundred twenty-one".