122420144052405 has 12 divisors (see below), whose sum is σ = 212194916357580. Its totient is φ = 65290743494592.

The previous prime is 122420144052397. The next prime is 122420144052413. The reversal of 122420144052405 is 504250441024221.

122420144052405 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 2 + 0 + 1 + 4 + 405 + 240 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (122420144052397) and next prime (122420144052413).

It can be written as a sum of positive squares in 2 ways, for example, as 56474278113969 + 65945865938436 = 7514937^2 + 8120706^2 .

It is not a de Polignac number, because 122420144052405 - 2³ = 122420144052397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122420144052405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1360223822760 + ... + 1360223822849.

It is an arithmetic number, because the mean of its divisors is an integer number (17682909696465).

Almost surely, 2^{122420144052405} is an apocalyptic number.

122420144052405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122420144052405 is a deficient number, since it is larger than the sum of its proper divisors (89774772305175).

122420144052405 is a wasteful number, since it uses less digits than its factorization.

122420144052405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720447645620 (or 2720447645617 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 36.

Adding to 122420144052405 its reverse (504250441024221), we get a palindrome (626670585076626).

The spelling of 122420144052405 in words is "one hundred twenty-two trillion, four hundred twenty billion, one hundred forty-four million, fifty-two thousand, four hundred five".