221222340204 has 24 divisors (see below), whose sum is σ = 516240113088. Its totient is φ = 73732972560.

The previous prime is 221222340187. The next prime is 221222340221. The reversal of 221222340204 is 402043222122.

It is an interprime number because it is at equal distance from previous prime (221222340187) and next prime (221222340221).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857302 + ... + 1085085.

It is an arithmetic number, because the mean of its divisors is an integer number (21510004712).

Almost surely, 2^221222340204 is an apocalyptic number.

It is an amenable number.

221222340204 is an abundant number, since it is smaller than the sum of its proper divisors (295017772884).

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

221222340204 is a wasteful number, since it uses less digits than its factorization.

221222340204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951885 (or 1951883 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 221222340204 its reverse (402043222122), we get a palindrome (623265562326).

The spelling of 221222340204 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred forty thousand, two hundred four".