11211020001109 has 2 divisors, whose sum is σ = 11211020001110. Its totient is φ = 11211020001108.

The previous prime is 11211020001091. The next prime is 11211020001119. The reversal of 11211020001109 is 90110002011211.

Together with previous prime (11211020001091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11205736165009 + 5283836100 = 3347497^2 + 72690^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211020001109 - 2³⁷ = 11073581047637 is a prime.

It is a super-2 number, since 2×11211020001109² (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 (11211020001119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605510000554 + 5605510000555.

It is an arithmetic number, because the mean of its divisors is an integer number (5605510000555).

Almost surely, 2^{11211020001109} is an apocalyptic number.

It is an amenable number.

11211020001109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211020001109 is an equidigital number, since it uses as much as digits as its factorization.

11211020001109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 11211020001109 in words is "eleven trillion, two hundred eleven billion, twenty million, one thousand, one hundred nine".