222121200100012 has 48 divisors (see below), whose sum is σ = 410507430278400. Its totient is φ = 104871591984960.

The previous prime is 222121200099971. The next prime is 222121200100013. The reversal of 222121200100012 is 210001002121222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222121200100013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478846263 + ... + 479309905.

It is an arithmetic number, because the mean of its divisors is an integer number (8552238130800).

Almost surely, 2^{222121200100012} is an apocalyptic number.

It is an amenable number.

222121200100012 is a deficient number, since it is larger than the sum of its proper divisors (188386230178388).

222121200100012 is a wasteful number, since it uses less digits than its factorization.

222121200100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484246 (or 484244 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222121200100012 its reverse (210001002121222), we get a palindrome (432122202221234).

The spelling of 222121200100012 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred million, one hundred thousand, twelve".