222000121021012 has 24 divisors (see below), whose sum is σ = 388747334817576. Its totient is φ = 110929456155648.

The previous prime is 222000121021001. The next prime is 222000121021013. The reversal of 222000121021012 is 210120121000222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13464687169476 + 208535433851536 = 3669426^2 + 14440756^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000121021013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458837368 + ... + 459320944.

It is an arithmetic number, because the mean of its divisors is an integer number (16197805617399).

Almost surely, 2^{222000121021012} is an apocalyptic number.

It is an amenable number.

222000121021012 is a deficient number, since it is larger than the sum of its proper divisors (166747213796564).

222000121021012 is a wasteful number, since it uses less digits than its factorization.

222000121021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556347 (or 556345 counting only the distinct ones).

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

Adding to 222000121021012 its reverse (210120121000222), we get a palindrome (432120242021234).

The spelling of 222000121021012 in words is "two hundred twenty-two trillion, one hundred twenty-one million, twenty-one thousand, twelve".