221022002001222 has 48 divisors (see below), whose sum is σ = 507059562690720. Its totient is φ = 69338993185536.

The previous prime is 221022002001221. The next prime is 221022002001247. The reversal of 221022002001222 is 222100200220122.

221022002001222 is a `hidden beast` number, since 2 + 21 + 0 + 220 + 0 + 200 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221022002001195 and 221022002001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022002001221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10703368 + ... + 23592500.

It is an arithmetic number, because the mean of its divisors is an integer number (10563740889390).

Almost surely, 2^{221022002001222} is an apocalyptic number.

221022002001222 is an abundant number, since it is smaller than the sum of its proper divisors (286037560689498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221022002001222 is a wasteful number, since it uses less digits than its factorization.

221022002001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12945197 (or 12945194 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221022002001222 its reverse (222100200220122), we get a palindrome (443122202221344).

The spelling of 221022002001222 in words is "two hundred twenty-one trillion, twenty-two billion, two million, one thousand, two hundred twenty-two".