1100010221221 has 4 divisors (see below), whose sum is σ = 1100012681152. Its totient is φ = 1100007761292.

The previous prime is 1100010221207. The next prime is 1100010221227. The reversal of 1100010221221 is 1221220100011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100010221221 - 2²⁹ = 1099473350309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100010221227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348765 + ... + 1523698.

It is an arithmetic number, because the mean of its divisors is an integer number (275003170288).

Almost surely, 2^{1100010221221} is an apocalyptic number.

It is an amenable number.

1100010221221 is a deficient number, since it is larger than the sum of its proper divisors (2459931).

1100010221221 is an equidigital number, since it uses as much as digits as its factorization.

1100010221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459930.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1100010221221 its reverse (1221220100011), we get a palindrome (2321230321232).

It can be divided in two parts, 1100010 and 221221, that added together give a palindrome (1321231).

The spelling of 1100010221221 in words is "one trillion, one hundred billion, ten million, two hundred twenty-one thousand, two hundred twenty-one".