122540002065 has 64 divisors (see below), whose sum is σ = 234772204800. Its totient is φ = 60284777472.

The previous prime is 122540002001. The next prime is 122540002069. The reversal of 122540002065 is 560200045221.

It is not a de Polignac number, because 122540002065 - 2⁶ = 122540002001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (122540002069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2536617 + ... + 2584473.

It is an arithmetic number, because the mean of its divisors is an integer number (3668315700).

Almost surely, 2^122540002065 is an apocalyptic number.

122540002065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122540002065 is a deficient number, since it is larger than the sum of its proper divisors (112232202735).

122540002065 is a wasteful number, since it uses less digits than its factorization.

122540002065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49343 (or 49337 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 122540002065 its reverse (560200045221), we get a palindrome (682740047286).

The spelling of 122540002065 in words is "one hundred twenty-two billion, five hundred forty million, two thousand, sixty-five".