222121334004 has 12 divisors (see below), whose sum is σ = 518283112704. Its totient is φ = 74040444664.

The previous prime is 222121333999. The next prime is 222121334009. The reversal of 222121334004 is 400433121222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222121333999) and next prime (222121334009).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121334009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9255055572 + ... + 9255055595.

It is an arithmetic number, because the mean of its divisors is an integer number (43190259392).

Almost surely, 2^222121334004 is an apocalyptic number.

It is an amenable number.

222121334004 is an abundant number, since it is smaller than the sum of its proper divisors (296161778700).

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

222121334004 is a wasteful number, since it uses less digits than its factorization.

222121334004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510111174 (or 18510111172 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 222121334004 its reverse (400433121222), we get a palindrome (622554455226).

The spelling of 222121334004 in words is "two hundred twenty-two billion, one hundred twenty-one million, three hundred thirty-four thousand, four".