1102020121109 has 2 divisors, whose sum is σ = 1102020121110. Its totient is φ = 1102020121108.

The previous prime is 1102020121091. The next prime is 1102020121117. The reversal of 1102020121109 is 9011210202011.

Together with previous prime (1102020121091) 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., 1087947044209 + 14073076900 = 1043047^2 + 118630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102020121109 - 2¹⁶ = 1102020055573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102020121159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551010060554 + 551010060555.

It is an arithmetic number, because the mean of its divisors is an integer number (551010060555).

Almost surely, 2^{1102020121109} is an apocalyptic number.

It is an amenable number.

1102020121109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102020121109 is an equidigital number, since it uses as much as digits as its factorization.

1102020121109 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 1102020121109 in words is "one trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, one hundred nine".