12101202011 has 4 divisors (see below), whose sum is σ = 12738107400. Its totient is φ = 11464296624.

The previous prime is 12101201999. The next prime is 12101202013. The reversal of 12101202011 is 11020210121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12101202011 - 2¹⁰ = 12101200987 is a prime.

It is a super-2 number, since 2×12101202011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101201983 and 12101202001.

It is not an unprimeable number, because it can be changed into a prime (12101202013) 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, 318452666 + ... + 318452703.

It is an arithmetic number, because the mean of its divisors is an integer number (3184526850).

Almost surely, 2^12101202011 is an apocalyptic number.

12101202011 is a deficient number, since it is larger than the sum of its proper divisors (636905389).

12101202011 is an equidigital number, since it uses as much as digits as its factorization.

12101202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636905388.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12101202011 its reverse (11020210121), we get a palindrome (23121412132).

The spelling of 12101202011 in words is "twelve billion, one hundred one million, two hundred two thousand, eleven".