221211120221122 has 8 divisors (see below), whose sum is σ = 331816834780236. Its totient is φ = 110605508627712.

The previous prime is 221211120221071. The next prime is 221211120221141. The reversal of 221211120221122 is 221122021112122.

It can be written as a sum of positive squares in 2 ways, for example, as 220056486158601 + 1154634062521 = 14834301^2 + 1074539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221211120221093 and 221211120221102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20125383 + ... + 29111050.

Almost surely, 2^{221211120221122} is an apocalyptic number.

221211120221122 is a deficient number, since it is larger than the sum of its proper divisors (110605714559114).

221211120221122 is a wasteful number, since it uses less digits than its factorization.

221211120221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51482852.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221211120221122 its reverse (221122021112122), we get a palindrome (442333141333244).

The spelling of 221211120221122 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred twenty million, two hundred twenty-one thousand, one hundred twenty-two".