121220022000061 has 2 divisors, whose sum is σ = 121220022000062. Its totient is φ = 121220022000060.

The previous prime is 121220021999911. The next prime is 121220022000109. The reversal of 121220022000061 is 160000220022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89269333580025 + 31950688420036 = 9448245^2 + 5652494^2 .

It is an emirp because it is prime and its reverse (160000220022121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121220022000061 - 2¹¹ = 121220021998013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220022000761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610011000030 + 60610011000031.

It is an arithmetic number, because the mean of its divisors is an integer number (60610011000031).

Almost surely, 2^{121220022000061} is an apocalyptic number.

It is an amenable number.

121220022000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220022000061 is an equidigital number, since it uses as much as digits as its factorization.

121220022000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121220022000061 its reverse (160000220022121), we get a palindrome (281220242022182).

The spelling of 121220022000061 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty-two million, sixty-one", and thus it is an aban number.