1100010121221 has 16 divisors (see below), whose sum is σ = 1600373924928. Its totient is φ = 666523132800.

The previous prime is 1100010121139. The next prime is 1100010121247. The reversal of 1100010121221 is 1221210100011.

It is not a de Polignac number, because 1100010121221 - 2¹⁸ = 1100009859077 is a prime.

It is a super-2 number, since 2×1100010121221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1100010121197 and 1100010121206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100010121271) 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, 3592390 + ... + 3886551.

It is an arithmetic number, because the mean of its divisors is an integer number (100023370308).

Almost surely, 2^{1100010121221} is an apocalyptic number.

1100010121221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100010121221 is a deficient number, since it is larger than the sum of its proper divisors (500363803707).

1100010121221 is a wasteful number, since it uses less digits than its factorization.

1100010121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483412.

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

Adding to 1100010121221 its reverse (1221210100011), we get a palindrome (2321220221232).

The spelling of 1100010121221 in words is "one trillion, one hundred billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".