12122211061 has 2 divisors, whose sum is σ = 12122211062. Its totient is φ = 12122211060.

The previous prime is 12122211047. The next prime is 12122211083. The reversal of 12122211061 is 16011222121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8906640625 + 3215570436 = 94375^2 + 56706^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122211061 - 2¹⁵ = 12122178293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122211461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061105530 + 6061105531.

It is an arithmetic number, because the mean of its divisors is an integer number (6061105531).

Almost surely, 2^12122211061 is an apocalyptic number.

It is an amenable number.

12122211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122211061 is an equidigital number, since it uses as much as digits as its factorization.

12122211061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12122211061 its reverse (16011222121), we get a palindrome (28133433182).

The spelling of 12122211061 in words is "twelve billion, one hundred twenty-two million, two hundred eleven thousand, sixty-one".