12101011 has 4 divisors (see below), whose sum is σ = 13031872. Its totient is φ = 11170152.

The previous prime is 12101009. The next prime is 12101021. The reversal of 12101011 is 11010121.

12101011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11010121 = 1163 ⋅9467.

It is a cyclic number.

It is not a de Polignac number, because 12101011 - 2¹ = 12101009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100985 and 12101003.

It is not an unprimeable number, because it can be changed into a prime (12101021) 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, 465411 + ... + 465436.

It is an arithmetic number, because the mean of its divisors is an integer number (3257968).

Almost surely, 2^12101011 is an apocalyptic number.

12101011 is a deficient number, since it is larger than the sum of its proper divisors (930861).

12101011 is an equidigital number, since it uses as much as digits as its factorization.

12101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930860.

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

The square root of 12101011 is about 3478.6507441823. The cubic root of 12101011 is about 229.5834362937.

Adding to 12101011 its reverse (11010121), we get a palindrome (23111132).

Multiplying 12101011 by its reverse (11010121), we get a palindrome (133233595332331).

It can be divided in two parts, 1 and 2101011, that added together give a palindrome (2101012).

The spelling of 12101011 in words is "twelve million, one hundred one thousand, eleven".