102020221200109 has 2 divisors, whose sum is σ = 102020221200110. Its totient is φ = 102020221200108.

The previous prime is 102020221200083. The next prime is 102020221200127. The reversal of 102020221200109 is 901002122020201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99229390346025 + 2790830854084 = 9961395^2 + 1670578^2 .

It is a cyclic number.

It is not a de Polignac number, because 102020221200109 - 2¹¹ = 102020221198061 is a prime.

It is a super-2 number, since 2×102020221200109² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102020221200109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102020221200179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010110600054 + 51010110600055.

It is an arithmetic number, because the mean of its divisors is an integer number (51010110600055).

Almost surely, 2^{102020221200109} is an apocalyptic number.

It is an amenable number.

102020221200109 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020221200109 is an equidigital number, since it uses as much as digits as its factorization.

102020221200109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 102020221200109 in words is "one hundred two trillion, twenty billion, two hundred twenty-one million, two hundred thousand, one hundred nine".