12201021011 has 2 divisors, whose sum is σ = 12201021012. Its totient is φ = 12201021010.

The previous prime is 12201020987. The next prime is 12201021031. The reversal of 12201021011 is 11012010221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201021011 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201020983 and 12201021001.

It is not a weakly prime, because it can be changed into another prime (12201021031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100510505 + 6100510506.

It is an arithmetic number, because the mean of its divisors is an integer number (6100510506).

Almost surely, 2^12201021011 is an apocalyptic number.

12201021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201021011 is an equidigital number, since it uses as much as digits as its factorization.

12201021011 is an evil number, because the sum of its binary digits is even.

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

Adding to 12201021011 its reverse (11012010221), we get a palindrome (23213031232).

It can be divided in two parts, 122010210 and 11, that added together give a palindrome (122010221).

The spelling of 12201021011 in words is "twelve billion, two hundred one million, twenty-one thousand, eleven".