10212101221109 has 2 divisors, whose sum is σ = 10212101221110. Its totient is φ = 10212101221108.

The previous prime is 10212101221097. The next prime is 10212101221117. The reversal of 10212101221109 is 90112210121201.

It is a happy number.

10212101221109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7484245990225 + 2727855230884 = 2735735^2 + 1651622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212101221109 is a prime.

It is a super-2 number, since 2×10212101221109² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212101227109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106050610554 + 5106050610555.

It is an arithmetic number, because the mean of its divisors is an integer number (5106050610555).

Almost surely, 2^{10212101221109} is an apocalyptic number.

It is an amenable number.

10212101221109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212101221109 is an equidigital number, since it uses as much as digits as its factorization.

10212101221109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 10212101221109 in words is "ten trillion, two hundred twelve billion, one hundred one million, two hundred twenty-one thousand, one hundred nine".