222121012012 has 48 divisors (see below), whose sum is σ = 395989231680. Its totient is φ = 109001198592.

The previous prime is 222121012007. The next prime is 222121012037. The reversal of 222121012012 is 210210121222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89817208 + ... + 89819680.

It is an arithmetic number, because the mean of its divisors is an integer number (8249775660).

Almost surely, 2^222121012012 is an apocalyptic number.

It is an amenable number.

222121012012 is a deficient number, since it is larger than the sum of its proper divisors (173868219668).

222121012012 is a wasteful number, since it uses less digits than its factorization.

222121012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330 (or 4328 counting only the distinct ones).

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

Adding to 222121012012 its reverse (210210121222), we get a palindrome (432331133234).

The spelling of 222121012012 in words is "two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, twelve".