111021211101 has 16 divisors (see below), whose sum is σ = 152041313600. Its totient is φ = 72007947648.

The previous prime is 111021211039. The next prime is 111021211123. The reversal of 111021211101 is 101112120111.

It is not a de Polignac number, because 111021211101 - 2¹³ = 111021202909 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 (111021211151) 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, 1664370 + ... + 1729788.

It is an arithmetic number, because the mean of its divisors is an integer number (9502582100).

Almost surely, 2^111021211101 is an apocalyptic number.

It is an amenable number.

111021211101 is a deficient number, since it is larger than the sum of its proper divisors (41020102499).

111021211101 is a wasteful number, since it uses less digits than its factorization.

111021211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80748.

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

Adding to 111021211101 its reverse (101112120111), we get a palindrome (212133331212).

The spelling of 111021211101 in words is "one hundred eleven billion, twenty-one million, two hundred eleven thousand, one hundred one".