12220121099077 has 2 divisors, whose sum is σ = 12220121099078. Its totient is φ = 12220121099076.

The previous prime is 12220121099033. The next prime is 12220121099083. The reversal of 12220121099077 is 77099012102221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10372612187716 + 1847508911361 = 3220654^2 + 1359231^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220121099077 - 2⁷ = 12220121098949 is a prime.

It is a super-2 number, since 2×12220121099077² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220121099377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110060549538 + 6110060549539.

It is an arithmetic number, because the mean of its divisors is an integer number (6110060549539).

Almost surely, 2^{12220121099077} is an apocalyptic number.

It is an amenable number.

12220121099077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220121099077 is an equidigital number, since it uses as much as digits as its factorization.

12220121099077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 12220121099077 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, ninety-nine thousand, seventy-seven".