11212111101 has 16 divisors (see below), whose sum is σ = 15103376640. Its totient is φ = 7397851200.

The previous prime is 11212111087. The next prime is 11212111123. The reversal of 11212111101 is 10111121211.

It is not a de Polignac number, because 11212111101 - 2¹⁵ = 11212078333 is a prime.

It is a super-2 number, since 2×11212111101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212112101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007395 + ... + 1018463.

It is an arithmetic number, because the mean of its divisors is an integer number (943961040).

Almost surely, 2^11212111101 is an apocalyptic number.

It is an amenable number.

11212111101 is a deficient number, since it is larger than the sum of its proper divisors (3891265539).

11212111101 is a wasteful number, since it uses less digits than its factorization.

11212111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14516.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11212111101 its reverse (10111121211), we get a palindrome (21323232312).

The spelling of 11212111101 in words is "eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred one".