111021001101 has 6 divisors (see below), whose sum is σ = 160363668270. Its totient is φ = 74014000728.

The previous prime is 111021001093. The next prime is 111021001139. The reversal of 111021001101 is 101100120111.

It can be written as a sum of positive squares in only one way, i.e., 68500499076 + 42520502025 = 261726^2 + 206205^2 .

It is not a de Polignac number, because 111021001101 - 2³ = 111021001093 is a prime.

It is a super-3 number, since 3×111021001101³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 12335666789 = 111021001101 / (1 + 1 + 1 + 0 + 2 + 1 + 0 + 0 + 1 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021001171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6167833386 + ... + 6167833403.

It is an arithmetic number, because the mean of its divisors is an integer number (26727278045).

Almost surely, 2^111021001101 is an apocalyptic number.

It is an amenable number.

111021001101 is a deficient number, since it is larger than the sum of its proper divisors (49342667169).

111021001101 is a wasteful number, since it uses less digits than its factorization.

111021001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12335666795 (or 12335666792 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111021001101 its reverse (101100120111), we get a palindrome (212121121212).

The spelling of 111021001101 in words is "one hundred eleven billion, twenty-one million, one thousand, one hundred one".