101220100201109 has 2 divisors, whose sum is σ = 101220100201110. Its totient is φ = 101220100201108.

The previous prime is 101220100201093. The next prime is 101220100201139. The reversal of 101220100201109 is 901102001022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76684225844209 + 24535874356900 = 8756953^2 + 4953370^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220100201109 - 2⁴ = 101220100201093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220100201139) 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, 50610050100554 + 50610050100555.

It is an arithmetic number, because the mean of its divisors is an integer number (50610050100555).

Almost surely, 2^{101220100201109} is an apocalyptic number.

It is an amenable number.

101220100201109 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220100201109 is an equidigital number, since it uses as much as digits as its factorization.

101220100201109 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 101220100201109 in words is "one hundred one trillion, two hundred twenty billion, one hundred million, two hundred one thousand, one hundred nine".