1212102011211 has 96 divisors (see below), whose sum is σ = 2039946935040. Its totient is φ = 634520791296.

The previous prime is 1212102011203. The next prime is 1212102011221. The reversal of 1212102011211 is 1121102012121.

It is a happy number.

It is not a de Polignac number, because 1212102011211 - 2³ = 1212102011203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212102011221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 204640296 + ... + 204646218.

It is an arithmetic number, because the mean of its divisors is an integer number (21249447240).

Almost surely, 2^{1212102011211} is an apocalyptic number.

1212102011211 is a deficient number, since it is larger than the sum of its proper divisors (827844923829).

1212102011211 is a wasteful number, since it uses less digits than its factorization.

1212102011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745 (or 6738 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212102011211 its reverse (1121102012121), we get a palindrome (2333204023332).

The spelling of 1212102011211 in words is "one trillion, two hundred twelve billion, one hundred two million, eleven thousand, two hundred eleven".