1211112102011 has 8 divisors (see below), whose sum is σ = 1384538498784. Its totient is φ = 1037788300800.

The previous prime is 1211112102007. The next prime is 1211112102049. The reversal of 1211112102011 is 1102012111121.

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 1211112102011 - 2² = 1211112102007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211112152011) 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 7 ways as a sum of consecutive naturals, for example, 25623590 + ... + 25670811.

It is an arithmetic number, because the mean of its divisors is an integer number (173067312348).

Almost surely, 2^{1211112102011} is an apocalyptic number.

1211112102011 is a deficient number, since it is larger than the sum of its proper divisors (173426396773).

1211112102011 is an equidigital number, since it uses as much as digits as its factorization.

1211112102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51297781.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1211112102011 its reverse (1102012111121), we get a palindrome (2313124213132).

The spelling of 1211112102011 in words is "one trillion, two hundred eleven billion, one hundred twelve million, one hundred two thousand, eleven".