222220121012 has 12 divisors (see below), whose sum is σ = 388934938980. Its totient is φ = 111095852736.

The previous prime is 222220121003. The next prime is 222220121047. The reversal of 222220121012 is 210121022222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 113706537616 + 108513583396 = 337204^2 + 329414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3516713 + ... + 3579344.

It is an arithmetic number, because the mean of its divisors is an integer number (32411244915).

Almost surely, 2^222220121012 is an apocalyptic number.

It is an amenable number.

222220121012 is a deficient number, since it is larger than the sum of its proper divisors (166714817968).

222220121012 is a wasteful number, since it uses less digits than its factorization.

222220121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7103890 (or 7103888 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222220121012 its reverse (210121022222), we get a palindrome (432341143234).

The spelling of 222220121012 in words is "two hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, twelve".