10212313113221 has 2 divisors, whose sum is σ = 10212313113222. Its totient is φ = 10212313113220.

The previous prime is 10212313113217. The next prime is 10212313113257. The reversal of 10212313113221 is 12231131321201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9980481456100 + 231831657121 = 3159190^2 + 481489^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212313113221 - 2² = 10212313113217 is a prime.

It is a super-3 number, since 3×10212313113221³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212313713221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106156556610 + 5106156556611.

It is an arithmetic number, because the mean of its divisors is an integer number (5106156556611).

Almost surely, 2^{10212313113221} is an apocalyptic number.

It is an amenable number.

10212313113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212313113221 is an equidigital number, since it uses as much as digits as its factorization.

10212313113221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 10212313113221 its reverse (12231131321201), we get a palindrome (22443444434422).

The spelling of 10212313113221 in words is "ten trillion, two hundred twelve billion, three hundred thirteen million, one hundred thirteen thousand, two hundred twenty-one".