1110000121221 has 32 divisors (see below), whose sum is σ = 1533866826240. Its totient is φ = 713162451456.

The previous prime is 1110000121211. The next prime is 1110000121253. The reversal of 1110000121221 is 1221210000111.

It is not a de Polignac number, because 1110000121221 - 2²⁵ = 1109966566789 is a prime.

It is a super-2 number, since 2×1110000121221² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1110000121197 and 1110000121206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110000121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121214175 + ... + 121223331.

It is an arithmetic number, because the mean of its divisors is an integer number (47933338320).

Almost surely, 2^{1110000121221} is an apocalyptic number.

It is an amenable number.

1110000121221 is a deficient number, since it is larger than the sum of its proper divisors (423866705019).

1110000121221 is a wasteful number, since it uses less digits than its factorization.

1110000121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11613.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1110000121221 its reverse (1221210000111), we get a palindrome (2331210121332).

The spelling of 1110000121221 in words is "one trillion, one hundred ten billion, one hundred twenty-one thousand, two hundred twenty-one".