101112211111 has 4 divisors (see below), whose sum is σ = 101117169432. Its totient is φ = 101107252792.

The previous prime is 101112211027. The next prime is 101112211117. The reversal of 101112211111 is 111112211101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111112211101 = 449 ⋅247465949.

It is a cyclic number.

It is not a de Polignac number, because 101112211111 - 2²¹ = 101110113959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101112211091 and 101112211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101112211117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2448445 + ... + 2489398.

It is an arithmetic number, because the mean of its divisors is an integer number (25279292358).

Almost surely, 2^101112211111 is an apocalyptic number.

101112211111 is a deficient number, since it is larger than the sum of its proper divisors (4958321).

101112211111 is an equidigital number, since it uses as much as digits as its factorization.

101112211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958320.

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

Adding to 101112211111 its reverse (111112211101), we get a palindrome (212224422212).

It can be divided in two parts, 10111 and 2211111, that added together give a palindrome (2221222).

The spelling of 101112211111 in words is "one hundred one billion, one hundred twelve million, two hundred eleven thousand, one hundred eleven".