221020022021122 has 8 divisors (see below), whose sum is σ = 331689345884172. Its totient is φ = 110456906726400.

The previous prime is 221020022021119. The next prime is 221020022021177. The reversal of 221020022021122 is 221120220020122.

It can be written as a sum of positive squares in 2 ways, for example, as 218913892556121 + 2106129465001 = 14795739^2 + 1451251^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221020022021122.

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, 26552136879 + ... + 26552145202.

Almost surely, 2^{221020022021122} is an apocalyptic number.

221020022021122 is a deficient number, since it is larger than the sum of its proper divisors (110669323863050).

221020022021122 is a wasteful number, since it uses less digits than its factorization.

221020022021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53104284164.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221020022021122 its reverse (221120220020122), we get a palindrome (442140242041244).

The spelling of 221020022021122 in words is "two hundred twenty-one trillion, twenty billion, twenty-two million, twenty-one thousand, one hundred twenty-two".