122021044391 has 2 divisors, whose sum is σ = 122021044392. Its totient is φ = 122021044390.

The previous prime is 122021044319. The next prime is 122021044403. The reversal of 122021044391 is 193440120221.

Together with previous prime (122021044319) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122021044391 - 2¹⁰ = 122021043367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122021044091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010522195 + 61010522196.

It is an arithmetic number, because the mean of its divisors is an integer number (61010522196).

Almost surely, 2^122021044391 is an apocalyptic number.

122021044391 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021044391 is an equidigital number, since it uses as much as digits as its factorization.

122021044391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 122021044391 in words is "one hundred twenty-two billion, twenty-one million, forty-four thousand, three hundred ninety-one".