11212100002109 has 2 divisors, whose sum is σ = 11212100002110. Its totient is φ = 11212100002108.

The previous prime is 11212100002091. The next prime is 11212100002127. The reversal of 11212100002109 is 90120000121211.

Together with previous prime (11212100002091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (11212100002091) and next prime (11212100002127).

It can be written as a sum of positive squares in only one way, i.e., 6731482140100 + 4480617862009 = 2594510^2 + 2116747^2 .

It is an emirp because it is prime and its reverse (90120000121211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11212100002109 - 2²⁴ = 11212083224893 is a prime.

It is a super-2 number, since 2×11212100002109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212100004109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606050001054 + 5606050001055.

It is an arithmetic number, because the mean of its divisors is an integer number (5606050001055).

Almost surely, 2^{11212100002109} is an apocalyptic number.

It is an amenable number.

11212100002109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212100002109 is an equidigital number, since it uses as much as digits as its factorization.

11212100002109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 11212100002109 in words is "eleven trillion, two hundred twelve billion, one hundred million, two thousand, one hundred nine".