12161011 has 2 divisors, whose sum is σ = 12161012. Its totient is φ = 12161010.

The previous prime is 12161003. The next prime is 12161027. The reversal of 12161011 is 11016121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12161011 - 2³ = 12161003 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12160982 and 12161000.

It is not a weakly prime, because it can be changed into another prime (12161041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6080505 + 6080506.

It is an arithmetic number, because the mean of its divisors is an integer number (6080506).

Almost surely, 2^12161011 is an apocalyptic number.

12161011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12161011 is an equidigital number, since it uses as much as digits as its factorization.

12161011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 12161011 is about 3487.2641138864. The cubic root of 12161011 is about 229.9622559362.

Adding to 12161011 its reverse (11016121), we get a palindrome (23177132).

The spelling of 12161011 in words is "twelve million, one hundred sixty-one thousand, eleven".