12221123269 has 2 divisors, whose sum is σ = 12221123270. Its totient is φ = 12221123268.

The previous prime is 12221123261. The next prime is 12221123329. The reversal of 12221123269 is 96232112221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10891427044 + 1329696225 = 104362^2 + 36465^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221123269 - 2³ = 12221123261 is a prime.

It is a super-2 number, since 2×12221123269² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12221123269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221123261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110561634 + 6110561635.

It is an arithmetic number, because the mean of its divisors is an integer number (6110561635).

Almost surely, 2^12221123269 is an apocalyptic number.

It is an amenable number.

12221123269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221123269 is an equidigital number, since it uses as much as digits as its factorization.

12221123269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The spelling of 12221123269 in words is "twelve billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred sixty-nine".