122621371091 has 2 divisors, whose sum is σ = 122621371092. Its totient is φ = 122621371090.

The previous prime is 122621371073. The next prime is 122621371133. The reversal of 122621371091 is 190173126221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122621371091 - 2¹⁸ = 122621108947 is a prime.

It is not a weakly prime, because it can be changed into another prime (122621371001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61310685545 + 61310685546.

It is an arithmetic number, because the mean of its divisors is an integer number (61310685546).

Almost surely, 2^122621371091 is an apocalyptic number.

122621371091 is a deficient number, since it is larger than the sum of its proper divisors (1).

122621371091 is an equidigital number, since it uses as much as digits as its factorization.

122621371091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 122621371091 in words is "one hundred twenty-two billion, six hundred twenty-one million, three hundred seventy-one thousand, ninety-one".