222010202012221 has 6 divisors (see below), whose sum is σ = 258256765606110. Its totient is φ = 190294458867576.

The previous prime is 222010202012201. The next prime is 222010202012227. The reversal of 222010202012221 is 122210202010222.

It can be written as a sum of positive squares in only one way, i.e., 190719939199321 + 31290262812900 = 13810139^2 + 5593770^2 .

It is not a de Polignac number, because 222010202012221 - 2³⁵ = 221975842273853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222010202012227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2265410224566 + ... + 2265410224663.

It is an arithmetic number, because the mean of its divisors is an integer number (43042794267685).

Almost surely, 2^{222010202012221} is an apocalyptic number.

It is an amenable number.

222010202012221 is a deficient number, since it is larger than the sum of its proper divisors (36246563593889).

222010202012221 is an equidigital number, since it uses as much as digits as its factorization.

222010202012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530820449243 (or 4530820449236 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222010202012221 its reverse (122210202010222), we get a palindrome (344220404022443).

The spelling of 222010202012221 in words is "two hundred twenty-two trillion, ten billion, two hundred two million, twelve thousand, two hundred twenty-one".