122621107493 has 2 divisors, whose sum is σ = 122621107494. Its totient is φ = 122621107492.

The previous prime is 122621107417. The next prime is 122621107547. The reversal of 122621107493 is 394701126221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121119312484 + 1501795009 = 348022^2 + 38753^2 .

It is a cyclic number.

It is not a de Polignac number, because 122621107493 - 2⁸ = 122621107237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122621107393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61310553746 + 61310553747.

It is an arithmetic number, because the mean of its divisors is an integer number (61310553747).

Almost surely, 2^122621107493 is an apocalyptic number.

It is an amenable number.

122621107493 is a deficient number, since it is larger than the sum of its proper divisors (1).

122621107493 is an equidigital number, since it uses as much as digits as its factorization.

122621107493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 122621107493 in words is "one hundred twenty-two billion, six hundred twenty-one million, one hundred seven thousand, four hundred ninety-three".