1101320121 has 64 divisors (see below), whose sum is σ = 1694048256. Its totient is φ = 630604800.

The previous prime is 1101320117. The next prime is 1101320149. The reversal of 1101320121 is 1210231011.

1101320121 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1101320121 - 2² = 1101320117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101320097 and 1101320106.

It is not an unprimeable number, because it can be changed into a prime (1101320191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8038765 + ... + 8038901.

It is an arithmetic number, because the mean of its divisors is an integer number (26469504).

Almost surely, 2^1101320121 is an apocalyptic number.

1101320121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101320121 is a deficient number, since it is larger than the sum of its proper divisors (592728135).

1101320121 is a wasteful number, since it uses less digits than its factorization.

1101320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

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

The square root of 1101320121 is about 33186.1435090009. The cubic root of 1101320121 is about 1032.6929002678.

Adding to 1101320121 its reverse (1210231011), we get a palindrome (2311551132).

It can be divided in two parts, 110 and 1320121, that added together give a palindrome (1320231).

The spelling of 1101320121 in words is "one billion, one hundred one million, three hundred twenty thousand, one hundred twenty-one".