1101321111 has 48 divisors (see below), whose sum is σ = 1702978560. Its totient is φ = 627747840.

The previous prime is 1101321103. The next prime is 1101321113. The reversal of 1101321111 is 1111231011.

It is not a de Polignac number, because 1101321111 - 2³ = 1101321103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101321113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2298970 + ... + 2299448.

It is an arithmetic number, because the mean of its divisors is an integer number (35478720).

Almost surely, 2^1101321111 is an apocalyptic number.

1101321111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101321111 is a deficient number, since it is larger than the sum of its proper divisors (601657449).

1101321111 is a wasteful number, since it uses less digits than its factorization.

1101321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 705 counting only the distinct ones).

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

The square root of 1101321111 is about 33186.1584248614. The cubic root of 1101321111 is about 1032.6932097042.

Adding to 1101321111 its reverse (1111231011), we get a palindrome (2212552122).

The spelling of 1101321111 in words is "one billion, one hundred one million, three hundred twenty-one thousand, one hundred eleven".