1101231111 has 8 divisors (see below), whose sum is σ = 1507992304. Its totient is φ = 714312000.

The previous prime is 1101231101. The next prime is 1101231113. The reversal of 1101231111 is 1111321011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1101231111 - 2²² = 1097036807 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 (1101231113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4960390 + ... + 4960611.

It is an arithmetic number, because the mean of its divisors is an integer number (188499038).

Almost surely, 2^1101231111 is an apocalyptic number.

1101231111 is a deficient number, since it is larger than the sum of its proper divisors (406761193).

1101231111 is an equidigital number, since it uses as much as digits as its factorization.

1101231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9921041.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 1101231111 is about 33184.8024101395. The cubic root of 1101231111 is about 1032.6650783627.

Adding to 1101231111 its reverse (1111321011), we get a palindrome (2212552122).

The spelling of 1101231111 in words is "one billion, one hundred one million, two hundred thirty-one thousand, one hundred eleven".