1112102121221 has 16 divisors (see below), whose sum is σ = 1402125005568. Its totient is φ = 858443875200.

The previous prime is 1112102121181. The next prime is 1112102121259. The reversal of 1112102121221 is 1221212012111.

It is a cyclic number.

It is not a de Polignac number, because 1112102121221 - 2¹⁰ = 1112102120197 is a prime.

It is a super-2 number, since 2×1112102121221² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1112102121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112102121281) 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, 149031665 + ... + 149039126.

It is an arithmetic number, because the mean of its divisors is an integer number (87632812848).

Almost surely, 2^{1112102121221} is an apocalyptic number.

It is an amenable number.

1112102121221 is a deficient number, since it is larger than the sum of its proper divisors (290022884347).

1112102121221 is a wasteful number, since it uses less digits than its factorization.

1112102121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298070852.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1112102121221 its reverse (1221212012111), we get a palindrome (2333314133332).

The spelling of 1112102121221 in words is "one trillion, one hundred twelve billion, one hundred two million, one hundred twenty-one thousand, two hundred twenty-one".