221002222011122 has 8 divisors (see below), whose sum is σ = 332793229254876. Its totient is φ = 110071145592832.

The previous prime is 221002222011113. The next prime is 221002222011227. The reversal of 221002222011122 is 221110222200122.

It can be written as a sum of positive squares in 2 ways, for example, as 141419212104361 + 79583009906761 = 11891981^2 + 8920931^2 .

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 = 221002222011094 and 221002222011103.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 214982705723 + ... + 214982706750.

Almost surely, 2^{221002222011122} is an apocalyptic number.

221002222011122 is a deficient number, since it is larger than the sum of its proper divisors (111791007243754).

221002222011122 is a wasteful number, since it uses less digits than its factorization.

221002222011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429965412732.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221002222011122 its reverse (221110222200122), we get a palindrome (442112444211244).

The spelling of 221002222011122 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-two million, eleven thousand, one hundred twenty-two".