1211200100212 has 12 divisors (see below), whose sum is σ = 2151235999360. Its totient is φ = 596561243256.

The previous prime is 1211200100197. The next prime is 1211200100239. The reversal of 1211200100212 is 2120010021121.

It is a junction number, because it is equal to n+sod(n) for n = 1211200100192 and 1211200100201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259701412 + ... + 2259701947.

Almost surely, 2^{1211200100212} is an apocalyptic number.

It is an amenable number.

1211200100212 is a deficient number, since it is larger than the sum of its proper divisors (940035899148).

1211200100212 is a wasteful number, since it uses less digits than its factorization.

1211200100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519403430 (or 4519403428 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211200100212 its reverse (2120010021121), we get a palindrome (3331210121333).

The spelling of 1211200100212 in words is "one trillion, two hundred eleven billion, two hundred million, one hundred thousand, two hundred twelve".