122221102201021 has 2 divisors, whose sum is σ = 122221102201022. Its totient is φ = 122221102201020.

The previous prime is 122221102201001. The next prime is 122221102201031. The reversal of 122221102201021 is 120102201122221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112529897376121 + 9691204824900 = 10608011^2 + 3113070^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221102201021 - 2¹³ = 122221102192829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122221102201021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122221102201001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110551100510 + 61110551100511.

It is an arithmetic number, because the mean of its divisors is an integer number (61110551100511).

Almost surely, 2^{122221102201021} is an apocalyptic number.

It is an amenable number.

122221102201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221102201021 is an equidigital number, since it uses as much as digits as its factorization.

122221102201021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122221102201021 its reverse (120102201122221), we get a palindrome (242323303323242).

The spelling of 122221102201021 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one hundred two million, two hundred one thousand, twenty-one".