1211200110212 has 12 divisors (see below), whose sum is σ = 2119775842716. Its totient is φ = 605549869440.

The previous prime is 1211200110209. The next prime is 1211200110221. The reversal of 1211200110212 is 2120110021121.

It can be written as a sum of positive squares in 2 ways, for example, as 565452865156 + 645747245056 = 751966^2 + 803584^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12492089 + ... + 12588672.

It is an arithmetic number, because the mean of its divisors is an integer number (176647986893).

Almost surely, 2^{1211200110212} is an apocalyptic number.

It is an amenable number.

1211200110212 is a deficient number, since it is larger than the sum of its proper divisors (908575732504).

1211200110212 is a wasteful number, since it uses less digits than its factorization.

1211200110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25092838 (or 25092836 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211200110212 its reverse (2120110021121), we get a palindrome (3331310131333).

The spelling of 1211200110212 in words is "one trillion, two hundred eleven billion, two hundred million, one hundred ten thousand, two hundred twelve".