221022021122 has 8 divisors (see below), whose sum is σ = 378894893376. Its totient is φ = 94723723332.

The previous prime is 221022021113. The next prime is 221022021149. The reversal of 221022021122 is 221120220122.

It is a happy number.

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 221022021122.

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, 7893643598 + ... + 7893643625.

It is an arithmetic number, because the mean of its divisors is an integer number (47361861672).

Almost surely, 2^221022021122 is an apocalyptic number.

221022021122 is a deficient number, since it is larger than the sum of its proper divisors (157872872254).

221022021122 is a wasteful number, since it uses less digits than its factorization.

221022021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15787287232.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221022021122 its reverse (221120220122), we get a palindrome (442142241244).

The spelling of 221022021122 in words is "two hundred twenty-one billion, twenty-two million, twenty-one thousand, one hundred twenty-two".