1102222021221 has 8 divisors (see below), whose sum is σ = 1632921512960. Its totient is φ = 734814680796.

The previous prime is 1102222021151. The next prime is 1102222021247. The reversal of 1102222021221 is 1221202222011.

It is a happy number.

It is not a de Polignac number, because 1102222021221 - 2¹⁰ = 1102222020197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1102222021194 and 1102222021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102222021321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20411518885 + ... + 20411518938.

It is an arithmetic number, because the mean of its divisors is an integer number (204115189120).

Almost surely, 2^{1102222021221} is an apocalyptic number.

It is an amenable number.

1102222021221 is a deficient number, since it is larger than the sum of its proper divisors (530699491739).

1102222021221 is an equidigital number, since it uses as much as digits as its factorization.

1102222021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40823037832 (or 40823037826 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1102222021221 its reverse (1221202222011), we get a palindrome (2323424243232).

The spelling of 1102222021221 in words is "one trillion, one hundred two billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-one".