1211202100011 has 8 divisors (see below), whose sum is σ = 1618225210944. Its totient is φ = 805823527880.

The previous prime is 1211202099979. The next prime is 1211202100013. The reversal of 1211202100011 is 1100012021121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211202100011 - 2⁵ = 1211202099979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211202100011.

It is not an unprimeable number, because it can be changed into a prime (1211202100013) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 411132981 + ... + 411135926.

It is an arithmetic number, because the mean of its divisors is an integer number (202278151368).

Almost surely, 2^{1211202100011} is an apocalyptic number.

1211202100011 is a deficient number, since it is larger than the sum of its proper divisors (407023110933).

1211202100011 is an equidigital number, since it uses as much as digits as its factorization.

1211202100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822269401.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1211202100011 its reverse (1100012021121), we get a palindrome (2311214121132).

The spelling of 1211202100011 in words is "one trillion, two hundred eleven billion, two hundred two million, one hundred thousand, eleven".