202110001109 has 2 divisors, whose sum is σ = 202110001110. Its totient is φ = 202110001108.

The previous prime is 202110001097. The next prime is 202110001141. The reversal of 202110001109 is 901100011202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139093940209 + 63016060900 = 372953^2 + 251030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202110001109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202110001609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055000554 + 101055000555.

It is an arithmetic number, because the mean of its divisors is an integer number (101055000555).

Almost surely, 2^202110001109 is an apocalyptic number.

It is an amenable number.

202110001109 is a deficient number, since it is larger than the sum of its proper divisors (1).

202110001109 is an equidigital number, since it uses as much as digits as its factorization.

202110001109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 202110001109 in words is "two hundred two billion, one hundred ten million, one thousand, one hundred nine".