122000012221 has 2 divisors, whose sum is σ = 122000012222. Its totient is φ = 122000012220.

The previous prime is 122000012207. The next prime is 122000012231. The reversal of 122000012221 is 122210000221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65920562500 + 56079449721 = 256750^2 + 236811^2 .

It is an emirp because it is prime and its reverse (122210000221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122000012221 - 2⁷ = 122000012093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122000012231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61000006110 + 61000006111.

It is an arithmetic number, because the mean of its divisors is an integer number (61000006111).

Almost surely, 2^122000012221 is an apocalyptic number.

It is an amenable number.

122000012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122000012221 is an equidigital number, since it uses as much as digits as its factorization.

122000012221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122000012221 its reverse (122210000221), we get a palindrome (244210012442).

The spelling of 122000012221 in words is "one hundred twenty-two billion, twelve thousand, two hundred twenty-one".