1211120211101 has 8 divisors (see below), whose sum is σ = 1213199848224. Its totient is φ = 1209041184240.

The previous prime is 1211120211097. The next prime is 1211120211139. The reversal of 1211120211101 is 1011120211121.

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 1211120211101 - 2² = 1211120211097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211120211701) 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, 3912746 + ... + 4210916.

It is an arithmetic number, because the mean of its divisors is an integer number (151649981028).

Almost surely, 2^{1211120211101} is an apocalyptic number.

It is an amenable number.

1211120211101 is a deficient number, since it is larger than the sum of its proper divisors (2079637123).

1211120211101 is an equidigital number, since it uses as much as digits as its factorization.

1211120211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305131.

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

Adding to 1211120211101 its reverse (1011120211121), we get a palindrome (2222240422222).

The spelling of 1211120211101 in words is "one trillion, two hundred eleven billion, one hundred twenty million, two hundred eleven thousand, one hundred one".