12011101 has 4 divisors (see below), whose sum is σ = 12022972. Its totient is φ = 11999232.

The previous prime is 12011099. The next prime is 12011113. The reversal of 12011101 is 10111021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10111021 = 19 ⋅532159.

It can be written as a sum of positive squares in 2 ways, for example, as 5885476 + 6125625 = 2426^2 + 2475^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011101 - 2¹ = 12011099 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 (12011171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4260 + ... + 6493.

It is an arithmetic number, because the mean of its divisors is an integer number (3005743).

Almost surely, 2^12011101 is an apocalyptic number.

It is an amenable number.

12011101 is a deficient number, since it is larger than the sum of its proper divisors (11871).

12011101 is a wasteful number, since it uses less digits than its factorization.

12011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11870.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 12011101 is about 3465.7035360804. The cubic root of 12011101 is about 229.0134238236.

Adding to 12011101 its reverse (10111021), we get a palindrome (22122122).

Multiplying 12011101 by its reverse (10111021), we get a palindrome (121444494444121).

It can be divided in two parts, 1 and 2011101, that added together give a palindrome (2011102).

The spelling of 12011101 in words is "twelve million, eleven thousand, one hundred one".