1211002100212 has 12 divisors (see below), whose sum is σ = 2130349245696. Its totient is φ = 602330887160.

The previous prime is 1211002100197. The next prime is 1211002100213. The reversal of 1211002100212 is 2120012001121.

It is a junction number, because it is equal to n+sod(n) for n = 1211002100192 and 1211002100201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211002100213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792539878 + ... + 792541405.

It is an arithmetic number, because the mean of its divisors is an integer number (177529103808).

Almost surely, 2^{1211002100212} is an apocalyptic number.

It is an amenable number.

1211002100212 is a deficient number, since it is larger than the sum of its proper divisors (919347145484).

1211002100212 is a wasteful number, since it uses less digits than its factorization.

1211002100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585081478 (or 1585081476 counting only the distinct ones).

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

Adding to 1211002100212 its reverse (2120012001121), we get a palindrome (3331014101333).

Subtracting 1211002100212 from its reverse (2120012001121), we obtain a palindrome (909009900909).

The spelling of 1211002100212 in words is "one trillion, two hundred eleven billion, two million, one hundred thousand, two hundred twelve".