201200010121109 has 2 divisors, whose sum is σ = 201200010121110. Its totient is φ = 201200010121108.

The previous prime is 201200010121093. The next prime is 201200010121169. The reversal of 201200010121109 is 901121010002102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111674634734884 + 89525375386225 = 10567622^2 + 9461785^2 .

It is a cyclic number.

It is not a de Polignac number, because 201200010121109 - 2⁴ = 201200010121093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201200010121169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600005060554 + 100600005060555.

It is an arithmetic number, because the mean of its divisors is an integer number (100600005060555).

Almost surely, 2^{201200010121109} is an apocalyptic number.

It is an amenable number.

201200010121109 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200010121109 is an equidigital number, since it uses as much as digits as its factorization.

201200010121109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 201200010121109 in words is "two hundred one trillion, two hundred billion, ten million, one hundred twenty-one thousand, one hundred nine".