111211100210101 has 16 divisors (see below), whose sum is σ = 113726947017600. Its totient is φ = 108725526125568.

The previous prime is 111211100210059. The next prime is 111211100210179. The reversal of 111211100210101 is 101012001112111.

It is a cyclic number.

It is not a de Polignac number, because 111211100210101 - 2¹³ = 111211100201909 is a prime.

It is a super-2 number, since 2×111211100210101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211100210501) 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, 3117570 + ... + 15236188.

It is an arithmetic number, because the mean of its divisors is an integer number (7107934188600).

Almost surely, 2^{111211100210101} is an apocalyptic number.

It is an amenable number.

111211100210101 is a deficient number, since it is larger than the sum of its proper divisors (2515846807499).

111211100210101 is a wasteful number, since it uses less digits than its factorization.

111211100210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12119868.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111211100210101 its reverse (101012001112111), we get a palindrome (212223101322212).

The spelling of 111211100210101 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred million, two hundred ten thousand, one hundred one".