201212010205 has 24 divisors (see below), whose sum is σ = 249758843400. Its totient is φ = 155602045440.

The previous prime is 201212010193. The next prime is 201212010283. The reversal of 201212010205 is 502010212102.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 149550811524 + 51661198681 = 386718^2 + 227291^2 .

It is not a de Polignac number, because 201212010205 - 2⁵ = 201212010173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 806331 + ... + 1025959.

It is an arithmetic number, because the mean of its divisors is an integer number (10406618475).

Almost surely, 2^201212010205 is an apocalyptic number.

It is an amenable number.

201212010205 is a deficient number, since it is larger than the sum of its proper divisors (48546833195).

201212010205 is a wasteful number, since it uses less digits than its factorization.

201212010205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219825 (or 219784 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 201212010205 its reverse (502010212102), we get a palindrome (703222222307).

The spelling of 201212010205 in words is "two hundred one billion, two hundred twelve million, ten thousand, two hundred five".