221222120022 has 96 divisors (see below), whose sum is σ = 493899120000. Its totient is φ = 71533376640.

The previous prime is 221222120017. The next prime is 221222120027. The reversal of 221222120022 is 220021222122.

221222120022 is a `hidden beast` number, since 221 + 2 + 221 + 200 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (221222120017) and next prime (221222120027).

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 = 221222119977 and 221222120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222120027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53967729 + ... + 53971827.

It is an arithmetic number, because the mean of its divisors is an integer number (5144782500).

Almost surely, 2^221222120022 is an apocalyptic number.

221222120022 is an abundant number, since it is smaller than the sum of its proper divisors (272676999978).

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

221222120022 is a wasteful number, since it uses less digits than its factorization.

221222120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826 (or 4823 counting only the distinct ones).

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

Adding to 221222120022 its reverse (220021222122), we get a palindrome (441243342144).

The spelling of 221222120022 in words is "two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, twenty-two".