11211101210111 has 8 divisors (see below), whose sum is σ = 12230342654544. Its totient is φ = 10191868169920.

The previous prime is 11211101210093. The next prime is 11211101210137. The reversal of 11211101210111 is 11101210111211.

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 11211101210111 - 2³⁰ = 11210027468287 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 (11211101210411) 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, 870971 + ... + 4814643.

It is an arithmetic number, because the mean of its divisors is an integer number (1528792831818).

Almost surely, 2^{11211101210111} is an apocalyptic number.

11211101210111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11211101210111 is a deficient number, since it is larger than the sum of its proper divisors (1019241444433).

11211101210111 is a wasteful number, since it uses less digits than its factorization.

11211101210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202121.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11211101210111 its reverse (11101210111211), we get a palindrome (22312311321322).

The spelling of 11211101210111 in words is "eleven trillion, two hundred eleven billion, one hundred one million, two hundred ten thousand, one hundred eleven".